I'm 21 years old and I've been on the pill for 6 months now and since I've started it I've had no changes in my menstrual cycle.
I noticed light bleeding and mild cramping on the 13th(my period was due to start the 19th) and it's stayed fairly light, only today have I had to use anything, but it hasn't been enough to fill a pad.
I've never had spotting in between periods before and there hasn't been any clots in this one. There has been little bits of tissue and I did pass a small clump of tissue on the 14th or 15th.
Last weird thing, today I noticed it's after I pee or wipe there's blood. It's been bright red once earlier today, but not once has it really gotten heavier.