Only saw a couple of posts related to this, and they seemed to be for babies around 2 mos... wonder if anyone has experienced this later on.
My DD is 5 1/2 mos. and has been ALMOST exclusively breastfed; when I went back to work (at 3 1/2 mos.), I had some supply issues, and we started giving her a little formula (cow's milk based) in the evenings to "tank her up" - otherwise she went to bed hungry, and she's already only 25th percentile for weight. Never had any issues with her taking the bottle or formula - gobbles it right up. In the last month, it's become a standard nightly bottle of about 4-6 oz. after I feed her.
About a week and a half ago, she all of a sudden had blood in her diaper. Not the "anal fissure" kind due to constipation, but mucuosy stringy stuff in her stools, which suddenly became looser. (Her poop has always varied a lot and I never really worried about it; never had any issues with gas or anything.)
Immediately took her to the ped, who told me it's most likely dairy in her diet or mine. Eliminated the formula (used frozen b-milk until I used it up, now using soy formula). 4 days later, blood seemed gone, and then it came back. Now I've eliminated dairy from my diet (and I'm aware of the different types of milk "products" that make this so difficult), and it's been almost a week... still seeing blood. It's diminished to just a few spots now, but I'm not sure what to read into that since it disappeared completely and then came back worse last week (which prompted another trip to ped, who said to continue to watch it).
Ped wants me to bring her back in tomorrow if we're still seeing blood. I'm terrified he'll send us to a GI specialist, who will do a colonoscopy (which I've heard is a TERRIBLE experience for infants).
I read a post that said it takes 2 weeks for the milk proteins to work their way out of my system and hers - it that supported by the medical literature? If it's true, I'd like to wait this out, but I don't want to risk my baby's health if it's not clinically proven.
Has anyone experienced this kind of sudden onset of a reaction before, when you've been eating dairy all along? Any information or support anyone has would be much appreciated. I really hoped to BF for another few mos. at least, and just find it so hard to believe that a hypoallergenic formula (which I think is the next step) would actually be better for her than b-milk...
thank you!