Feeling left out

I am not trying to come off as selfish or needy, but I'm just feeling left out with my boyfriend. His mom recently passed away and his sisters have been over a lot lately. He has 5 of them and he's the youngest. First he never really talked to his sisters or anyone in his family besides his mom. His mom kind-of held the peace in the family and sbe was such a kind nurturing women. Everyone in there town loved her and was devastated when she died. My boyfriend had a huge falling out with his sisters and how all of a sudden it's like nothing happened? His sisters have been over everyday for four days and they don't even like me. So he's hanging out with 5 women who do not like me and completely leaving me out of the conversation. I told him I don't want his sisters over anymore so he just goes and spends time with them elsewhere. I asked him yesterday "Since you're all buddy buddy with your sisters now are they paying for the funeral?" He got mad and told me to stop making his moms death about money. I'm not trying to but since they are all of sudden friends now then they can chip in for the funeral. Whenever he's not hanging out with his sister he's at home watching movies he used to watch with his mom. I don't really like any of those movies and he refuses to compromise with me on a movie so he will just go in the living room and watch them there. I feel left out of everything and like I have no say. I understand he lost his mom and she was a great women but he still had a girlfriend!