Hi, I've been feeling really weird lately, had my period on April 13th, then on may 13 got what looked like my period, but really light and pinkish for only 2 days, very unusual. Now on may 29 got something like my period again but more red and brownish for 3 days now. Since the 13 th I feel nauseous during the night, no vomiting, have headaches and can't sleep well, what could it be?