Friend is pregnant and I'm hurt

I found out at my 9 week appointment that my baby had stopped growing. I've been through medication two times to help the miscarriage process and ended up getting a D&C; Wednesday. My friend just told me that she is expecting and it was like a knife into my heart!! I want to be happy for her but I just don't know how or when I will be. I really can't stand even looking at her growing belly without my eyes filling with tears. 😩