Meet the Other Phone. Protection built in.

Meet the Other Phone.
Protection built in.

Buy now

Please or to access all these features

General health

Mumsnet doesn't verify the qualifications of users. If you have medical concerns, please consult a healthcare professional.

See all MNHQ comments on this thread

My baby seems different after vaccinations

16 replies

Phempobe · 23/01/2026 18:26

We had been researching the vaccines for a while and decided in the end it was the best thing to give our baby the recommended vaccinations. He's 4 months and had the first set 2 days ago. 6in1 and the menb. He was a little grumpy which was to be expected and we were prepared for that but today he is just so miserable. Crying a lot but feeding fine (a bit more than usual in fact) he has been such a happy and relaxed baby since day 1 and now I'm worried we made the wrong decision to vaccinate. He also has some little spots on his belly which look like chicken pox. They do fade under pressure.

I think I'm just after some reassurance that this is usual and he will be back to his old self soon.

OP posts:
metalbottle · 23/01/2026 18:27

He's just feeling a bit off which is entirely expected. Don't panic, give paracetamol if he seems in pain or has a temp and congratulations on being good parents and vaccinating.

Keroppi · 23/01/2026 18:38

Yes, everyone feels rotten after jabs so totally expected and normal that he is feeling unwell or grizzly as his immune system is working. Lots of cuddles, calpol if he has a temp or just to make him more comfy and just keep an eye on his feeds and nappies. Call the GP if you've any concerns about his feeding or if he's crying really hard with no reprieve xx

itsmeits · 23/01/2026 18:39

They can be off for a few days, as PP said Paracetamol, cuddles and comfort.
Please don't let this put you off further vaccinations.

KnickerlessParsons · 23/01/2026 18:40

I usually feel under the weather for 48 hours after my annual flu jab. I still have it every year though, because getting flu is worse.

DamnitCarol · 23/01/2026 18:46

Totally normal reaction, give calpol and ride it out. They will have an achy leg at the very least! Usually back to normal within 3 or 4 days in my experience of 2 kids and multiple vaccinations

Phempobe · 23/01/2026 19:53

Great thanks everyone. Anywhere I looked said after effects should pass within 48 hours so I was just getting a bit worried. I think he may be teething on top. Hopefully fine soon!!

OP posts:
Youspurnme · 23/01/2026 20:38

If you’re unlucky he’s gone straight into teething from the aftermath of the jabs, poor sausage. I was taken by surprise by DC1 being out of sorts at 4 months, yup it was teeth! Keep up the calpol and all will be well x

Blarn · 23/01/2026 20:43

I am very pro vaccinations but it is never nice having your little baby vaccinated. The needles, the crying, my crying! But I always reminded myself how much worse it would be if they caught one of the illnesses.

pimplebum · 23/01/2026 20:46

Phempobe · 23/01/2026 19:53

Great thanks everyone. Anywhere I looked said after effects should pass within 48 hours so I was just getting a bit worried. I think he may be teething on top. Hopefully fine soon!!

Worried about what ?

also can you link to the research you looked at as I’ve never seen any anti vax research

FictionalCharacter · 23/01/2026 21:28

This is the result of an inflammatory response, which is a completely normal response to a vaccine and lasts longer in some children and adults than others. Please don't worry.

Phempobe · 23/01/2026 22:13

pimplebum · 23/01/2026 20:46

Worried about what ?

also can you link to the research you looked at as I’ve never seen any anti vax research

Nothing in particular. More what is used in the vaccines and what is therefore going into a babies bloodstream and body. We weren't keen on the hep b tbh with the DNA technology but you can't get the others without that one on the NHS so we had to go for it. The nurse told me that hep b has been included so that parents who might have been exposed don't have to feel awkward asking for it. I think that's wrong really then all babies get it when most probably don't require it. Just my opinion don't want to start a war.

OP posts:
Mischance · 24/01/2026 09:09

Well done for making the sensible decision for your baby's future well-being, and for being a responsible parent.
These reactions will gradually subside and are normal.
Sometimes there is such a thing as too much information! ... especially when it comes to subjects on which we are not qualified experts.
Be happy that your child will be spared the miseries and dangers of future illnesses.

Phempobe · 24/01/2026 09:47

Mischance · 24/01/2026 09:09

Well done for making the sensible decision for your baby's future well-being, and for being a responsible parent.
These reactions will gradually subside and are normal.
Sometimes there is such a thing as too much information! ... especially when it comes to subjects on which we are not qualified experts.
Be happy that your child will be spared the miseries and dangers of future illnesses.

Yes maybe this is it. We live in a world where you can see so much "information" all at once and it does get scary. We vaccinated our other children without question but then this time there's so much out there against vaccines we did second guess our previous decision. Anyway he seems brighter today thankfully. 😊

OP posts:
ohpoowhatnow · 24/01/2026 09:57

My first was always for for about 4/5 days ! With my second I’ve spaced them out a bit more so he’s a few months late with second lot. They seem so tiny to be having to deal with it.

Mischance · 24/01/2026 10:08

I think it is important to remember, when talking about a baby "dealing with" a bug onslaught, that we are all bombarded with millions of microbes every day and the handful in the vaccinations is a mere taradiddle in the grand scheme of things.

BeckyAMumsnet · 24/02/2026 15:58

@Phempobe just to let you know we’re currently running a vaccinations Q&A with two NHS experts.

If you’d like to ask them directly about things like schedules, side effects, eligibility or outbreak concerns, you can post your question here

Ask the expert: Vaccinations in pregnancy and early childhood - £200 voucher to be won | Mumsnet

Vaccinations can raise lots of questions, whether you’re expecting a baby or taking your child for their routine immunisations. With the NHS vaccinati...

https://www.mumsnet.com/talk/sponsored_qas/5491467-ask-the-expert-vaccinations-in-pregnancy-and-early-childhood-ps200-voucher-to-be-won

New posts on this thread. Refresh page
Swipe left for the next trending thread