Ebf 3 month old - allergies/intolerances?

[Betsy9022]

Hi all, posting here as I'm at a bit of a loss regarding my 3 month old DD.
She's exclusively breastfed but weight gain is slow - tracking near 9th centile having fallen from almost 25th centile at the beginning. Her average daily gain up til 12 weeks was around 17-19g per day, and I know it should have been more like 20 to 30g.
From about week 6 she's become increasingly fussy and agitated when feeding and in between - peaking with full on breast refusal at 10 weeks which we're still dealing with now having seen a lactation consultant who told me to feed when she's sleepy and try latching standing up etc. Baby just doesn't like breastfeeding and doesn't seek it for comfort - will turn away and cry if offered when alert. For the very few feeds where she's hungry enough to actively transfer milk she's really uncomfortable, kicking legs, clawing at head or ear, grunting and pulling off and refusing to relatch.
I cut out dairy about 6 or 7 weeks ago, but admittedly haven't been 100% strict. After her last weigh in, the HV suggested milk supply might be an issue so I came home and thought I'd eat some cheese and see what happens as I've been finding limited diet hard to feed myself quickly. Then came the explosive mucus poo in a green tinge, so back to no dairy.
She's still very unsettled at feeds and doesn't enjoy it. I wonder if there's other foods that could be causing digestive issues?
Mums of breastfed babies who you found out were actually allergic or intolerant to certain foods - what behaviours did you notice?
She is in lots of discomfort trying to pass wind or poo, grunts, kicks and flails, refuses feeds, claws at head or ear when on breast, cries and unlatches. Her poos are always quite shiny (?) - mucusy? Never seen a 'seedy' poo so I worry she's not absorbing fat properly or going through her inflamed gut too quickly? They're usually dark yellow, sometimes towards brown or orange and we often get frothy poos too.
Any insight much appreciated, in case I need to try cutting out other food. I just want her to be settled and happy and hopefully the weight will improve too.
Thank you x

I had similar she started at 25th dropped down to the 9th the loosely followed that.

I removed her allergens and she went up to just under the 50th. She's yo-yoed ever since between the 9th and the 50th. She's now 5.5

You need to be really strict and no dairy at all and also be careful with soya as about half of babies are allergic to both

Our symptoms were feeding aversions (she went down to 5-15 seconds length feeds totaling about 2 minutes between 8am and 8pm! ) she fed best overnight which I think was because my milk was less problematic as it had been longer since I had eaten. Loose mucousy stools, screaming, having to be held and paced around the room. It also caused developmental issues where she was delayed with smiling and hearing - they think this was because she was in so much discomfort and pain. She also couldn't be out of my arms for more than 30 seconds... Day and night!

Thanks for your reply. How did you figure out her allergens? Just elimination diet or did she have tests later on? I think dairy and soy are definitely culprits here and I suspect peanut too as I had previously eaten peanut butter a lot and I think there were symptoms afterwards. Really hard to pinpoint though!
She's now nearly 4 months and the breast refusal has improved but definitely not brilliant at feeding yet.
How did you tackle weaning and potential allergies as well? Many thanks!

I noticed a CMPA when I was breastfeeding. First of all was that she puked when the NNICU gave her formula, but then I noticed a general whiny, squirmy behaviour if I had had a lot of dairy so I cut it out completely and it made a difference.

My sister preserved with breastfeeding for months because she was convinced it was best for her son. He spent 5 months screaming and being very unsettled. She was told, colic or intolerances, she cut out all sorts of foods and it made no difference. It was only when a passing doctor at a general check up suggested lactose intolerance. He was switched to a hypoallergenic formula and was a different baby. Go to the GP and ask to try some and see how it goes. It does seem like from your comments your LO is struggling with breastmilk.

Thanks for your reply. I have been considering not breastfeeding since she was tiny, but we have a full on bottle refuser here (even with EBM in it) so I've had to persist with breastfeeding. Has made things very tricky and mentally exhausting, but not much I can do apart from try to tackle the intolerances / hope things improve with time

Yep lots of really detailed food and symptoms diaries. It got harder once she was weaning as we had to look at my diet and the foods she was eating.
I didn't go dairy and soya free until 18 weeks and it was 15 months before we identified all of them and got her to symptoms free. She has never had any tests as her symptoms are consistent with delayed allergies which don't show up on tests

She had 20 allergies and there are more vegetables in her list than top 14 allergens which added a level of complexity. I breastfeed until 10 months but had to stop cold turkey as I collapsed and needed to start different medication and stop ignoring my physical and mental health. My body suffered a lot more than hers did! She was a complete bottle refused too and she went 26h without a drink before accepting the bottle! She had liquids in food. I had to go into hospital and she had to stay at home with dad, prior to this she couldn't even look at a bottle without trying to throw herself out of your arms. She went on to have a bottle until she was 2. She was really slow to wean and it took until 13 months for her to eat a meal and 20 months before she ate enough to maintain her weight through food. She barely put on any weight at all between 7 and 13 months. She's 5 now and still not great at eating.