Sad new momma.

So my boyfriend and I along with our 2 week old son, live with my older brother (25 years old) I am 22. It’s not the ideal situation but it’s the best we can do for now. Trying to save money. However my brother is such an ANGRY person. He’s always been. Ever since we were young. Mobile therapists had to come to the house because he wouldn’t ever leave and cooperate. As he got older he toned down a little bit. BUT he’s very verbally abusive to me. I was feeding my newborn on the couch and he asked me to get his money for him which was downstairs (he’s crippled and has a broken knee from fighting with his friend) I said yeah I need a few minutes though and he freaked out so bad calling me names “fucking bitch” “ what do you mean a couple minutes I need it now” I am so sad. My boyfriend and I do everything for him all the way down to cooking him meals and doing his dishes and cleaning his messes. I am upset he feels ok acting like that now with the baby around. Any advice? 🥺 doesn’t help that my emotions from postpartum are already all over the place.