Hi, today I was rubbing my gf's vagina. Before that, I was clearly releasing some pre *** on my underwear. I didnt touch it dircectly and I didnt touch my penis though. I was wearing slacks and underwear. My underwear was kinda wet a little but I never touched my underwear before the rubbing but I think i touched my slacks near my groin (near to the wet spot of underwear). I am worried that the sperm might pass through my slacks and eventually ended up in my hand/fingers,even though I only touched the slacks not the underwear. Is there any chance that the precum was transferred on my hands even though it was on the underwear and I only touched near the spot on the slacks where it is above the wet spot on my underwear? I am worried if my gf is pregnant.