In fact, this question is really about what it could actually be.
I'm 19, and still a virgin in the sense that my hymen hasn't been broken. My boyfriend and I simply fool around, touching and stuff sometimes. And never have we done that fully naked, I always wear at least panties.
The thing is, I had my last period March 21, and I am usually regular with a full cycle lasting 31 days. Now, 24 days later, April 14, I started to get brown blood, very little. I wasn't sure what it was, but later that day, it turned to fresh and red. Then back to brown in the evening

Well, the next day, I started to get a bit heavier in bleeding, enough to make me think I may be getting my period, but also little enough to make my remember that I usually get alot heavier periods. Also, my periods are usually very painful with extreme cramps and I just feel horrible. This time, its only light cramps, I got a slight back ache for a couple of hours, and I feel fairly tired and under the weather. Today, it's still going for now (April 16). Still just kind of heavy, but not as heavy as usual. Now, there are a few things to make mention of: me and my boyfriend were fooling around, as I stated at the start, on March 27 (6 days after my last period) and again a couple days after that. Nothing intense, just fooling around and touching. Also, this month was fairly wierd for me because I got a fairly serious cold on the 9th, a week ago, and it lasted for a few days, keeping me in bed the whole time. Also something to mention is that starting a week ago, I have been weening myself off of antidepresant pills, taking one every two days now instead of everyday.
I haven't the slightest clue what is actually going on, because if it is my period, it is very light, and along with that, this month has been eventful, but not really stressful. If anyone can help me clear this up, it would be greatly appreciated.
Thanks in advance, CautiousTeen