I have irregular periods and also suffer from hypothyroidism.I am slightly overweight(160 pounds,5'3"),and 26 yrs of age. Due to my irregular cycle, my gynae put me on a 10 day course of medroxyprogesterone 10 mg,a substitute for provera. I have completed the course day before yesterday and have not had my periods yet but my breasts are sore and i am too nauseated. Is it possible for me to get pregnant during this course as my hubby and me had unprotected sex like thrice in these 10 days! And I have no children yet!