I am almost 12 weeks pregnant and I have had minor bleeding since 9 weeks. Is it a possible miscarriage?

Have you had sex recently, a pelvic exam, these two things and others could cause minor bleeding during pregnancy.

Are you cramping, how minor is minor bleeding?

I would go see your doctor, anytime you are bleeding during pregnancy your doctor should be informed asap.

Good Luck and let us know how it goes.