Injections now hurting and bruising

[Jenasaurus]

I am on week 20, and the first 18 jabs were painless, no bruising or discomfort, last week and tonight's jab hurt, whilst carrying them out, it stung and then directly after a throbbing sharp pain for a while, the next day a bruise has appeared. I injected in my lower stomach, folds of fat, and alternate the sides. My DD suggested it could be because I have less fat now after losing 30 pounds so it may be more painful. I wonder if its that or if the needle is thicker, but it doesn't look to be any different to the previous ones.

I have been fairly lucky with few side effects, a little tiredness and a couple of bouts of upset stomach, but no vomiting or anything terrible. Having said that I am nervous as I have injected 10mg tonight, having been on 7.5 for the last 12 weeks so am anxious I may have some tomorrow.

I have diabetes and high cholesterol and the injections have helped me get my BMI from 33.8 to 28 and I want to keep going until I reach a healthy BMI, or stay permanently on a low maintenance dose to keep my sugar levels even but the painful injections was a bit of a shock after having no pain the first few weeks. Does anyone know if it means I have injected incorrectly, like into a muscle or an organ (I know thats unlikely though as I have been doing the same each week)

One other concern I have is I am waiting for results of a mammogram after finding a lump, I know its unlikely to be connected but Its on my mind that it could be.

I am also bruising now! Hopefully someone will be along to explain why.

The pen needles are 4mm long, it's impossible to accidentally inject into an internal organ or into muscle.

Perhaps you were pressing harder than normal? Or too near your belly button?

Do you always change the needle? Tbh it doesn't really matter if it bruises or hurts and it always seems pretty random to me. Good luck with the increased dose

Have you had any lurgy recently? I've had no reaction until a couple of weeks ago, when I had what I think was covid. The skin around the jab site was a bit raised and red and there was a small bruise. Back to normal reactions since the lurgy went, thankfully.

Well, I haven't been unwell but I discovered a lump in my left breast and now its throbbing, I had a mammogram (self booked) this week as couldn't get an appointment to see my GP until April, I am 60 and past the menopause and I am a little concerned by the lump but oddly reassured as it hurts which implies its more likely to be ab infected cyst rather than cancer. If I have an infection could this be the cause of the needle hurting, although its my stomach I am injecting.

This would be a weird thing to say without context, but I have my fingers firmly crossed for you that it's an infection.

This is the bruise and lump I have today, after injecting Thursday.
10th injection, and it was so painful. The needle, the mj going in, never experienced that before.

I have diabetes and have been giving myself injections since 1993. Used to have to count carbohydrate grams, calculate insulin units and inject at every meal. I love Mounjaro because it doesn't require any maths, and it only needs to be injected once every seven days.

Couldn't even begin to guess how many subcutaneous injections I've given myself, but it was an average of 4 jabs/day every day for decades.

In my (vast) experience subcutaneous injections with the very fine needles that come with injector pens are painless around 19 times out of 20. Every now and again you get unlucky and jab right on top of a tiny pain receptor under the skin, you "hit a nerve" and then you feel it.

Slightly more often you will puncture a capillary and trigger a little bleed. This is more noticeable if you are on blood thinners or take a low dose of aspirin. When I was injecting 4 times a day my stomach would be speckled with little bruises in various stages of development. Less so now with Mounjaro because they have more time to fade between jabs. Hitting a capillary doesn't always hurt, so you got extra unlucky to have pain and a bruise from the same injection.

If you want to avoid that sharp pain that you get from injecting right onto a nerve fibre you can do what we used to do in the veterinary hospital, dial up the dose, hold the pen in your hand, give a quick hard tap with the back of your hand to trigger the pain receptors, then quickly rotate your hand to jab the pen into that same place, immediately - before the receptor has time to reload the transmitter substances. Try it, it really does work. Just don't get carried away and smack hard enough to raise a bruise, because that would defeat the object.