im 15, this is going to sound stupid, but my school or parents don't provide information. me and my boyfriend did some stuff together at the end of my period in the beginning of june. then i had my period (i think it was) at the end of june. what we did (this is why i say im dumb) he rubbed me through my pants, but masturbated before he saw me. so about 4-5 hours later i fingered myself. would him masturbating before he saw me, that some sperm wouldn't be dead and it would be on my hands? also ive been having back, neck, and head pain, and this morning i got up and there was a little bit of watery darkish yellow or light brown discharge in my underwear. can i be pregnant?