Can I be pregnant? I'm only 16.?

I know this is going to sound stupid but this is what happened... a few weeks ago, my partner and I were fooling around and he ejaculated onto my back. We never had actual sex (I'm a virgin). I freaked out when I felt something wet on my back, so he wiped off most of it and dumped rubbing alcohol onto it. I got really upset, so I went home and I took a long, hot shower. A couple of days after, I got my period and it was pretty normal, actually. However... a few days ago, I was looking at some stuff on the Internet and I heard that you could get your period and still be pregnant. This is when I started to freak out... I think I became so afraid that I would feel nauseous all day and I wouldn't want to eat. Also, I was reading stories about people saying that they never had sex but they got pregnant because again, their partners ejaculated nearly their vaginas or whatever. I've been getting cramps for the past day or two and today, I looked down in my underwear and I saw sticky, white discharge and a couple of red streaks. Again, I googled what was going on and I heard that some women experience cramps and bleeding their pregnancies. They even get discharge.