My feelings are hurt

It hurts my feelings that I would be a little over 6 months pregnant right now and instead I'm not. I miss my baby sooo much. I lost it at 12 weeks pregnant. I had a few people that was pregnant with me. We were a few weeks apart and I see their pictures of their cute bellies and I think of what I could have:/ did I do something wrong to lose my baby? I wish no one had to deal with these things. It's almost been 3 months since I lost it. My mom keeps telling me that me and my man need to keep trying and not to give up. It's strange when your mom is telling you to have sex. She was heart broken when I told her I lost the baby. Sorry I just had to vent