So much mom guilt 😢 (possible allergies)

This might be long but my son is 12 months old and I just stopped breastfeeding him about three weeks ago and we tried putting him on whole milk (he loves milk and WIC said that’s all he can have). Well not long after we started him on dairy he had a really bad reaction and resulted in a really bad diaper rash. It was red and he screamed anytime he sat down or moved. It was terrible. I couldn’t reach the doctor or nurse line so i ended up just buying Almond milk and he seemed much better. The doctor finally got back to me a few days later and he recommended soy or lactose free milk and no almond milk so we switched again.

We are now on day 3 on soy and once again the same thing that happened with whole milk is happening again. I will be trying to get my son in to an appointment but his doctor never has openings!

I think my son has allergies to dairy , gluten, and soy. Since he was a baby he has ALWAYS been fussy and just always crying and screaming. We were always told “oh it’s just colic he’s fine. Nothing is wrong, it’s normal for some babies”. I kept asking if i should just go to a bland diet for him since maybe it’s my breast milk but the doctor kept telling me no need (I wish I would’ve just listened to my gut and cut out everything i felt like was messing with his belly. He probably would’ve been a happier baby and felt better).

When he got sick from his older sister we found out he was allergic to amoxicillin and had to rush him in because he had a bad reaction.

At the time I kept asking for allergy test but the doctor kept saying he’s too young. Not until he’s two if we are still having problems.

Well here we are now and I have a cranky 12 month old who I think has some food allergies or just dairy and I’m being blown off by the doctor and nurse like some worry wart mom as if I don’t know what’s normal for my son (obviously a bloody diaper rash isn’t normal).

Anyway I’m feeling major mom guilt for him being miserable this whole time and I wish I would’ve fought harder. I’m a young mom with two kids and I feel like I’m constantly being dismissed and being told I’m over reacting (his old pediatrician actually told me that when he had strep but she insisted it was just a cold and I wasted her time).

Has anyone’s kids had a dairy allergy or allergies to certain foods? How did you know or find out? I’m not seeking medical advice I just honestly don’t know what to do and I feel like I need to be prepared tomorrow when I take him in (hopefully they can squeeze us in) or else I’ll be dismissed once again.