7 months back i got married and gain weight 10kgs afterwards. This month i met my husband on CD28 that is 8 February. 15feb was due date of my periods. Still i am not getting any cramps or periods. But home pregnancy test coming negative. As i am taking glucophage 500mg and folic acid from 2 months. Its a first time for me to late my periods more than a week. My all the harmones tests are normal. What should i do?