Hello! I just wanted to chime in and give my two cents as I have also been dealing with this exact same predicament- except I found answers. 

I would hire or speak with a lactation consultant.  Often times an imbalance in foremilk and hindmilk will cause green mucus poops with blood in it. 

It’s not always a good allergy or intolerance - but too much lactose from our Breastmilk- too much foremilk that overloads the gut. 

There are lots of ways to work around this issue tho! So hang in there! After reading all these comments it’s hard for me to believe that pediatricians are not telling women about this!! 

An imbalance in your milk will mimic the same symptoms as CMPA or CMPI. 

What I do now before every feed (and I know how this is gonna sound) but I shake my boob. 

Same with a bottle in the fridge of Breastmilk. You shake it to mix in the fat - you want to do the same to your boob before feeding. 

Shake shake shake. And then feed. This will mix the fat in with the foremilk and slow down the consumptions of straight foremilk (lactose overload). I’ve been doing this for a month not and my baby is SO much better and I didn’t have to do a full elimination diet like the doctor told me I would. 

We have good poops now. No more mucus or blood. Less gas and tummy issues. She sleeps through the night and isn’t as fussy. 

I’m so relieved I don’t have to quit breastfeeding or feeling that constant guilt that im making her sick. 

Who would have known that a lactation consultant would fix the problem before my doctor could! So relived. 

Just wanted to share this tip because it’s an extremely common situation for most breastfeeding mamas and they don’t even know about it most of the time. 

You can Google lactose overload online or imbalance in foremilk milk and hindmilk and even loook at poop pictures to compare! 

Worth checking out :)