I need sexplanations!

Hey there, I'm 19 years old and virgin. I had the sexiest moments with my bf but there wasn't sex at all , no oral, penetration or anal. We were in our clothes on making out and I give him a handjob. Again, we were in our clothes on and I was in my period, so I wouldn't been able to get fingered or something. Two weeks later, I felt a little sick of the stomach and I had a bad dirrea and peeing a lot. Today my boob hurts and I feel like a bit of pain, it is similar to the cramps but I already done with my period. I can't think of pregnancy because a there were NO SEX in the scene. I don't know if I'm over reacting or not, but it is normal to get period symptoms weeks before your period?