Well , the other day my boyfriend and I were fooling around and he fingered me and I am very tight/small where I can't fit tampons and he attempted to finger me and after he attempted a couple times I went to the bathroom and there was a tiny bit of blood after I whiped and then I went to the bathroom the next day an it was there again but a dark red and thick and I have really bad lower back pains. I AM on birth control for irregular periods and cramps.. Is this normal?!?! I'm like freaking out about it :(