I've been spotting and bleeding irregularly for over a month nonstop, Ive made an apt with my family doctor but won't get in for another 2 weeks, I'm 18 years old, sexually active with the same partner for almost 2 years, I'm starting to get really concerned, Ive had a negative pregnancy test but that was about 2 months ago, I've also seen my doctor rrwice since December but he doesn't listen and brushes off any concerns. I've had very large blood clots, still some now but small, I've had black, brown, bright and dark red and Grey blood and clots. I've been thinking about going to emerg but at the same time it could be nothing. I've had severe cramps all day and absolutely exhausted and feel sick to my stomach, any idea what could be going on??