First mc

I found out I was pregnant and I was so scared but i learned to accept it and my boyfriend was so supportive and we were so ready. We planned out everything and were happy. It felt good to know he was so happy and we were gonna be a family. When he would see little kids playing outside he would get so excited bc he knew he was gonna be a dad but I lost our baby and I just feel so awful. We were so happy and ready and it's all my fault. I feel so bad and i can't stop crying. It's not fair. I was terrified and everything was fine but the second we fell in love with the baby we lost it. I can't stop thinking that i did something wrong. Everything just hurts and I feel so alone. I just feel so worthless.