In which days after my period there are few chances of pregnancy when he cum inside vagina. cycle 28 days. not afraid about std.

No guarantee: Pregnancy has been reported for any day of a woman's cycle including during menses. It is more likely during the week surrounding the halfway point, but there is still a risk on any day. If you want to avoid pregnancy, use some form of contraception every time. Condoms are cheep and effective if used correctly.The timing and "pull out " methods are incredibly poor methods.