What should I do from here?

Ok, to start off I'm almost 29 weeks along in my pregnancy. My best friend and I have been friends for six years. Every since I got pregnant she has been a little weird towards me. I miscarried last June at 13 weeks, had to get a dnc and everything... I was devastated. She told me last week she was pregnant and I was so excited for her and we started talking about names and everything. Well today she tells me she lost the baby... but her story does not add up at all. She didn't want me to go to her doctors appointment with her, she wouldn't even let her mom go... and now I know she was lying. This is immature and dumb and I am so furious because I lost my baby and if I lost my baby boy now I would die! It's not funny at all, I don't know why she would do this. What should I do? Thanks guys!