Hi Doctor, whenever we r trying for a baby, those particular months she will fell ill at the time her period suppose to start with severe back pain, fever,headache, dizziness, leg pain. Her period date is varying between 28 to 35 days due to that we r not able to find the correct ovulation period. When she had her period, she found clots also. We have done all pre conception checkups and everything is normal for us. Can you please tell us why this is happening. Thank You