I don’t know how to feel..

I’m so beyond happy my fiancé finally gets to see his daughter, and I can’t wait to meet her. but I have issues I’m feeling extremely depressed and discouraged Because I’ve been off the pill for almost 6 months. I know it can take a long time to be able to have one after getting off birth control but hitting the 6 month mark and getting nothing but bfn hurts and it hurts even more now. I just in the back of my head worry I’ll never be able to have kids and I’ll never have one of my own when he has one of his own. Like what if I can’t give him a family. I know for him and her or didn’t take long and I think that’s what hurts even more. I’m not worried about him leaving me for her but I know she’s going to try because she already said how they were fine until they moved. He doesn’t understand why I want to cry he doesn’t understand how hard this is. He’s trying but he just doesn’t get it.