Why do i feel so sad?

Me and my husband have talked about trying for a 2nd baby. Im truly exited but then it gets to me. My first pregnancy seemed ok to everyone. But honestly it was the worst time of my life, i had many complications and dont even know how im alive. Its honestly a miracle and I’m glad my son is completely healthy. During my pregnancy i was soo alone and afterwards everyone just made me feel horrible about myself. Its just crazy to me how i had no support other than my parents. Yet someone else can get pregnant in the family and get all the support and love. I want to be able to enjoy my pregnancy this time around with or without family. But then i just have flashbacks to what I experienced and i dont ever want to feel like that again. I litterly have no one to invite to my wedding. No bridesmaids. Nobody to invite to a babyshower or anything. I truly feel like i missed out on a lot. But i guess thats just my life, and i try making the best out of it. At the end of the day i only need my own little family by my side.