Baby shower

Today I went to my little sisters baby shower. I had alot of fun while there, but before and after the shower, I could do nothing but cry my eyes out. I've literally watched everyone I know get pregnant and start their families for years now. I just don't understand why I haven't gotten pregnant yet. My heart hearts a little bit more with each new pregnancy announcement and I don't know how I'm going to cope. Especially with everyone saying it should have been me having a baby first instead of my little sister😭