I am 18 years old and I already know for a fact I am not pregnant. I took a pregnancy test at the doctors and it came up negative. I am sexually active I had sex around the beginning of March or in the middle. Towards the end of the month my period was very light I told the doctor I wasn't getting a lot of blood and he said it is normal due to stress and around that month I was pretty stressed out. But now I am more relaxed and for some reason I am not bleeding heavy I wiped myself with a tissue today I had a lot of blood on the tissue and then my bleeding just stopped. Is this normal? I get my periods every month.