Sad, NEED HELP.

My roommate just found out she was pregnant today after already having her first baby. I'm so happy for her but I just feel like I'm doing something wrong 😭 why am I not getting pregnant after trying and trying for almost two years now?! Glow told me to take a test today and it was negative, I'm losing hope now. I just want a baby just one and I'll be happy 😢 I've prayed to God every day to bless me with a child and He hasn't ☹️ i just want to crawl in a closet and cry 😭😭😭 Does anyone have any tricks or advice for me??