I stopped my birth control a week ago and had sex next day and he finished in me . Yesterday I had brown blood in my undies it got heavier but it was only a lot when I wiped it was a lot on pad . Today it has turned red and it's still only a little unless I wipe then it's a lot . I have had mild cramping could I be pregnant or could it be withdraw from the birth control . I really would like to have a child so I'm hoping I'm pregnant