Oh and still with those 4 layers of pants, but if my underwear inside gets wet from my sebum, is there any risk?

So even if he has precum or has ejaculated, semen absolutely cannot get through 4 layers of pants, right? I've been so panicked lately, thank you very much!

I have almost all the signs of pregnancy, including a missed period, so I'm very worried (

My boyfriend had already ejaculated but wiped it off and lay on top of me but both were still wearing long pants and underwear. I thought I couldn't be pregnant but after 2 weeks I felt nauseous but couldn't vomit and got my period in a few days but there were no signs. Could I be pregnant?