OK, long set- up... I take the pill, but last month I took some late. It wasnt unusual for me to not have periods for about 6 months before i was on the pill. When it was the fourth week of pills, I had typical period symptoms (cramps, loss of appetite, breast tenderness etc) but no period. I started taking pregnancy tests the second day after my missed period, used first morning urine for nine days in a row. They were all negative, so i thought that my missed period was just becasue i used to not have them. I started the pill again, and i started my period the day i was supposed to, but on the second day, i passed a long, stringy, grey-ish piece of tissue that i have never seen anything like before! It was kind of firm in the center with dark blood around it... TMI, sry... Im really worried it was a miscarriage, so i took another pregnancy test right away because the levels of hgc stay for awhile even after a m/c.. still negative. So.. would starting birth control again have caused a miscarriage? and if so, why did the tissue come four weeks AFTER i started taking the pill again, with my normal period? Could it be extra lining or something from the missed period?