Distant fiancé

Ever since I’ve gotten pregnant by fiancé has acted different. So I’m 6 weeks 3 days, and I have the best fiancé ever, he is a very generous thoughtful person. And ever since I’ve been pregnant I’ve been absolutely sick, super nauseous and just don’t feel good. Well ever since we’ve found out he has been so distant. He doesn’t ask if I need anything whenever I don’t feel good. He has been staying super late at work (I know he’s at work, he FaceTimes me, I make him/ yes I’m crazy) and then he gets home and goes straight to bed. And then this weekend we planned a trip with my whole family to stay at the casino and just get together. Well I am not 21 so I cannot gamble, but he left me in the room and went next door with my family. I make T-shirt’s at home, so I don’t really have a job, but I make money. Well the second we get here he loses $100 and I was just shocked that he spent that much money that fast, his reply was “well ive been hard at work making this money all week unlike you” and that really hurt my feelings. He acts like I do nothing. And then he turns around and pays $130 for me, him, and my brother and his wife to eat. I am not a greedy person but if you don’t have money to eat, do you think you should be a casino wasting more money? He dropped me off at the front of the casino and made me get all the bags and take them up myself. He didn’t even offer to help. I just am so upset, and I don’t know why he’s making me feel like such a horrible person lately. At this point I don’t even want to be around him. He isn’t normally like this. What should I do! Help! I have been in the hotel room crying all night because my feelings are so hurt.