Hi welcome to HCMForum. Ovulation occurs on 14th day from the first day of the period in individuals with regular periods.
1to10days is safe, 21to30days is safe means no pregnancy
. 11to20days is unsafe means pregnancy can occur. so it is not
safe to have sex to avoid pregnancy. you can have HPTest with first urine. i advise you to avoid unprotected sex.extramarietal
sex. to avoid risk of pregnancy std