Research does help...!! Am 25 i being spotting about 5 years now and i dud all kinds of tests all is normal except the ultrasound of my pelvic..! Which has multiple cysts on it..! (pcos) which causes abnormal period, heavy bleeding, cramps with or without period constantly spotting. The other reason for spotting is infection,block fallopian tubes, and ovulation.. Doctor's don't normally know what is going on so seek answers outside the office..! Change ur doc and continue talk to different people...! Am in a different country now but I'll get myself fix once am home..! I have 1 child NEED MORE.. Fix the problem sooner than later ladies don't wait..!