Im 17 y/o I have not been n birth control for going on a year and a half now. The last couple months I have expierenced abnormal bleeding. I had my period and a couple weeks later I had light bleeding that started brown and very light pink and red. It only lasted a couple days with slight cramps my normal cycle is a full week. Again this month I had my period which wasn't a full week like normal and now a week later I am expierencing bleeding again no real cramps and its light red. Should I be worried I have symptoms that could mean pregnancy but I honestly don't think I am.