So earlier today I used the restroom and noticed very light brown in my underwear. I cleaned up and changed and put a pad on thinking my period was starting (I usually wear tampons but its always so light at first). Well it happened again about a half hour ago. But there was a lot this time. I did the same thing as I did before. But it was noooo shade of red. It really looked close to poop almost. But it was just that color. It had areally strong smell kind of. Just a really off smell. I've been extremely crampy the last two days also. And yes, I have been sexually active the last five months.
I know it's a lot of personal information I just want the best help possible.

Don't judge me please. I'm 17 years. Yes I have had my period. I know what a period is.