I usually start my period with dark brown spotting, which I got one night then the next day it became heavier and red. then I put the ring in later that day like 3 pm (Friday) then on a Tuesday night I had sex w/ my boyfriend.. Because my period was over, but I had very light spotting only when I wiped and I've been spotting since.. Today is a Friday.. What is going on, and could I get pregnant for not waiting a week?