So my boyfriend and I were fooling around last night, (we're both still virgins), I was giving him a handjob and he came all over my stomach. We're worried that some of it when "down there" but I'm on my period, had underwear, a panty liner on and a tampon in. It didn't go inside of my vagina but it might have gone around it. Is this a situation where I need to worry about the possibility of being pregnant? I'm not at an appropriate age to be having a baby. Please help! Thank you.