Couple of says ago. about 5 days actually. I was washing my hands, then I accidently wiped it on my stepdad's bath towel to dry my hands because his towel looks a lot like mine...then I was scared that there might have been something on the towel, I went and washed my hands again. I didn't see a visible semen stain or anything. but it was slightly damp, cause he had just showered not long ago.
then, I went to my bed and started masturbating (without fingering, just clitoral stimulation)....but afterwards I realized...what if he did something in the shower and got some sperm on the towel that I wiped my hand on...could I get pregnant from that???