I have my period every two weeks and got of yasmin around august 15th! my blood is normal bright red for the first day and then turns very dark, almost black and looks very "sticky"...i also have a lot of "tissuey" blood in the toliet during my period...ive never noticed this before so i was just wondering if this is normal! I was only on yasmin for about one month and I am also trying to get pregnant?!?! any suggestions on waht this might be??!!

Also, is it possible to ovulate when your cycle is 13-16 days long?!? I took an ovulation test and it should be ovulating on the 11th,and we were very sexually active over the next 48 hours, the line matched the test line and I got my period on the 16th. It seems like I go through this every month but this is the first time I ever showed ovulating.