sister

Me and my sister don't see each other often but we used to text everyday just about life chatting and what not. When I first became pregnant I told her and ever since then she doesn't talk to me anymore. If I reach out to her she will respond a few days later or not at all. When she does talk to me she says "so how is everything, how do you feel" I will answer her and she is so rude. She's made comments about how it's stupid to get pregnant, how I should get a paternity test because I've probably been with other people (mind you she knows I've been with my significant other for 5 years she loves him) about how Im a brat and spoiled because i just got a new car but it's a 2 door so I was thinking of trading it for a 4 door for my baby. just rude snark comments indirectly insulting me. Has anyone been through this? Why is she acting this way to me? I've backed off, if she texts me I will respond but other than that I just leave it alone.