I've been ttc for 6 months now & am concerned about my periods. Previously when not on the pill my periods used to be quite clotty, with thick dark blood (did give a TMI warning) Now the blood is watery & bright red. Assuming the clots are the uterus lining coming away could the change in my periods signify that my womb lining isn't thickening as it should therefore explaining the delay in getting pregnant. Or am I just totally paranoid. Opinions, medical or otherwise, much appreciated.