I made out with a guy for a few hours last night, and we dry humped for about 45 minutes. We were both wearing pants and underwear, and I'm actually not sure whether or not he ejaculated, but I was decently wet. I woke up this morning to find that I was bleeding - not a ton, but a little more than spotting - and I have some mild lower abdominal cramps. Has this happened to anyone else? I'm very sexually inexperienced, so I don't know if it's just a hormonal shift from getting turned on, but my period isn't due for another 5 days. What's going on here? (Stupid question, but I'm not pregnant, right?)