Uncircumcised😟😳

Im a virgin and last night I gave my bf a handjob. Found out he's uncircumcised. I know it's natural, but, why am I worrying so much about it? Like seriously, can't stop thinking about it (I'm hella new at all of this, he's my first bf, although he's much more experienced than me). Is there any actual differences between doing things with a circumcised one, than with an uncircumcised?