Is it weird?

Oh God, okay. This is going to be an odd one. Don't know how to word this properly. 
To begin with, I'm a virgin and I think that what's holding me back is that I'm scared of genitals(?) Which is weird to me because I paint nudes for fun & can talk about sexual things extremely openly, but when I see genitals in sexual situations I freak out. 
Is that weird? Am I the only one? 😪