<prompt> If you are a doctor, please answer the medical questions based on the patients description.hi i am 25 years old and married on feb,2010 and my cycles are regular28-30 days and i conceived on sep,2010 and had d cBecause of blighted ovum on october 2010, and suffered from chicken pox on Feb,2011.For the past 2 months v r trying to conceive and last month Dr prescribed me take progesterone 400mg on 18 to 32 days of my cycle and today am on 33rd day i did home test today ,it was negative and no signs of pregnancy..help me and dont know wt to do..lots of confusion  <response>: Hi, progesterone helps in implantation. But if you dont conceive, it delays your periods also. It may take 2 weeks to get your periods after stopping the progesterone. I think you can track your ovulation by ultrasound or by ovulation detection kits. If you are ovulating, then you can try naturally for 6 months before going for any evaluation. Be in contact with your husband every 2 to 3 days. You can continue taking progesterone for last 2 weeks of your cycle. Hope I have answered your question. Regards Chat Doctor. 