Vaginal Bleeding

BabyLeCount • You can`t have a rainbow without a little rain.
I'm 15 weeks and 5 days. I've been having vaginal bleeding for almost a week. Doctors can't really explain why I'm bleeding. It's not enough blood to soak a pad. Its more pink/dull-red in color and its mixed with discharge. I also have a "shorter than normal" cervix but not extremely short. Anyone else experiencing unexplainable bleeding?