<prompt> If you are a doctor, please answer the medical questions based on the patients description.i want to know that sex during periods is harmful or not. aur kya pregnancy karni ho toh yehi time better hota hai . because i want to be pregnant and last 6 months me and my husband tried but no result should be come. please suggest kaise possible hai  <response>: Hi, Thanks for writing. In a 28-day period, 14th day is the day of ovulation. Fertile period is 8-18th day. So having intercourse between 12th to 16th day helps in attaining pregnancy. After trying for pregnancy spontaneously for 1 year if it is unsuccessful, both have to get evaluated to detect the cause of infertility. Husband has to get a semen analysis done, and you have to get a scan done to see for ovulation and some blood tests. Hope I have answered your query. Good day. 