Best friend advice please?

My best friend and I have been friends for 4 years. We hardly ever fought until the last year or so. It's not big arguments. I've been dealing with health issues, family issues, and depression. And she knows all that I'm going through. Well, ever since she's been dating this one guy (her first boyfriend), she has been so different. It's not even her anymore. She's been yelling at me of how I'm a bad friend, she's sick of hearing my problems, she's mad when I'm not there for her, etc. I'm always there for her. When she wants space, I give it to her. When she wants to talk, I listen. And I don't even bring up my problems a lot. She thinks I always play the sympathy card and she doesn't like how I am depressed and how I deal with it. I take medicine for it, I go to a group, and I do my best. It's hard not to be depressed with everything I'm dealing with right now. What should I do? Right now, I'm not talking to her. It just seems worthless to. She's a great friend, but now, she's changed for the worse. I don't think it would be the same to be around her now.