Repost: pregnant or stressed?

I posted this earlier but deleted it. Now I'm literally getting more worried every minute.

For the past 4 days I've been crying and stressing over how I think I'm pregnant when in fact I'm a virgin and never touched a naked penis. I'm in a relationship, and during January my boyfriend and I have been very touchy during the month. Every time I would see him I would grab his penis but only outside his shorts NEVER from his boxers or naked. I don't know if sperm was on my fingers or if his shorts were damped. All I know is that when I would get home my hands were dry and I would finger myself. That's what makes me scared. I've read that when sperm is dry, it's dead...but don't know anything. We never had sex, and now because I've been panicking about this I don't believe that anytime soon I ever will. Anyways, my problem is that my period is 8 days late, and I've been panicking when it was 6 days late. My boyfriend has tried all he could to prove to me that it was stress since I've been stress eating a lot and staying up past 12 studying for exams. I also have had emotional/mental breakdowns everyday for personal reasons; family, school, friends etc. that he believes that could be the reason. I'm someone who overthinks a lot and I really want to know if I'm okay. I'm only 19, pregnancy has always been something scary to me since I was little because my mom had her first child at age 17. My breasts been sore and my body has been hurting lately and it scares me because I don't want to be pregnant. Plus my periods usually come regularly I don't understand what's going on...please forgive me for explaining things all over the place I've been crying over this for hours and I'm so scared. UPDATE:

I thought I saw brown discharge but now it's not there as I wipe..I'm honestly afraid. I have no idea what to do or say now I KNOW THIS IS REALLY DUMB BUT I AM SOMEONE WHO GETS SCARED AND ANXIOUS OVER THINGS..I hope someone can help me out..i would really really really appreciate it.