I am still breast feeding my 11 month old. My period came back when she was 6 months. They have been regular, but not heavy. Last month something weird happened. I started my period July 2nd. It last 3-4 days. Not heavy at all. Had sex around my ovulation which was the 19th. I had ovulation cramping. Since then up until the 25th of July when I started my period again. During that time I thought I was pregnant. On the 24th I started having brownish discharge, and thought maybe it was implantation bleeding. Then the morning of the 25th I started bleeding really heavy. With lots of blood clots. I thought maybe I had conceived, but since I'm still breast feeding it caused me to have a miscarriage. I only feed her morning, for nap, and going to bed. Sometimes still at night if she wakes up and can't go back to sleep. Is it harder for woman to get pregnant while breast feeding? I want to have another baby. Im 27, 5'6", 180lbs, also I have hypothyroidism.