iv had some bleeding that doesnt look like my regular period it is pink and brown but is still on going and it looked like clotting for a little wile wich was the color of my normal period and is now back to being pinkish brown this is the 3rd day of it i have cramps and a backach just like all my other periods but the blood is lighter that my regular period i took a pregnacy test and it was negative now what do i do i am also not on the pill and scared i could still be pregnant what do i do