I am 15 and I started having my period about 3 years ago. Now I have had this problem for a while but I dont know what is going on. My period is very irregular. I have my period very frequently. I just had it about 2 weeks ago and now I have it again but its always been clotting and I don't have a lot. It comes out very dark and it is not liquidy. Im a bit scared. If you know what it is please help me thank you.