My boyfriend and I were spooning and we had clothes on but our pants and underwear were pulled down. He started kind of grinding his penis against my vagina and he was a bit wet with Pre-ejaculate however not even close to ejaculation. The Pre-ejaculate was covered by his foreskin and he was grinding with it up.. His penis did not enter so I doubt any Pre-ejaculate got inside me but if it did.. Is there a risk of pregnancy even without semen involved? My period is due in about a week from today.