Is it normal?

First of all hello, I'm new here and I'm 23.

I had just recently had my first experience with sex, protection were involved. I was wondering if it is normal to think or feel like your boyfriend's dick is small and not quite enough to fit in a way. I have not used anything prior to this (dildo or anything else), him and I are both chunky people, but I cant help but wonder if it is normal to think his dick is small. I dont know if it was because its the first time and I have no clue what its like having sex, I mean don't get me wrong still amazing but selfish or rude for thinking that it's small. I do feel bad for thinking about that but I want to know if it is normal especially for the first time