Someone help me plzzzzz

Okay so I'm 16 and my bf is 17 I'm a virgin but I gave him a blowjob for like a minute he didn't cum bit there was precum and it was ofc on my hand. So after like an hour or so I went home and I touched my vagina because I was really wet due to the fact that I was giving him head, now my question is that if I touch my vagina with precum that was dried an hour ago could I be pregnant like my hand wasn't all the way in just by the vilvua. I m thinking this because I had a left itchy boob and I can't even tell by my periods because its always late.😪