I have irregular periods problem since long. usually my periods come 33 to 38 days. I have PCOD and thyroid problem also though thyroid is under control now and i am taking 50 mg thyroxine. This time we tried for pregnancy and my period due date was 1st july but still i have neither pregnancy nor period. i am feeling sometimes mild and sometimes heavy pain in my lower abdomen. i checked home pregnancy test and it came negative what should i do now. i am worrying.