I had unprotected sex a month ago. now tons of pain in lower stomach, dark brown discharge (sometimes clot like) and heavy blood flow. help!

See a gyn: Have you taken a pregnancy test? You need to! also if the sex was unprotected you need screening for stds both of these things can cause bleeding and pain, a pregnancy does not always implant where it is supposed to and if your pregnancy test is positive you should see a doctor right away as a rupturing ectopic can cause severe hemorrhage even death if that's what you have.