Need to vent

I got pregnant in January and lost my baby at 12 weeks in March. My best friend a person I call my sister has a baby and I love them both so much. That being said..... I have avoided her, I get sad when I'm around her and her baby. Reminds me of the baby I lost, a little tiny person who was suppose to be my own, a piece of me that is now gone. I avoid talking to her because every conversation is about babies and I don't have kids, so I can't really relate, it also just gets annoying. I resent her. My best friend. I resent her. Any one else ever feel this way?