Just need to vent

I’m currently 7dpo in my first cycle trying for #2. It took us 7 cycles to conceive my son. I’m trying to prepare myself for it to take just as long or longer this time. My biggest fear is not being able to give my son a sibling. I was an only child and I hated it. It was always so lonely growing up and I was jealous of all my friends who had a brother or sister. Even though I know they’ll fight 24/7 they will at least always have each other and hopefully grow up to be best friends. I’m praying I can conceive quickly this time around.