Is It Safe Having Intercourse 3 Days After 5 Days Menstruation Period?

You can not say any thing about safe days  because ovulation usually takes place at mid of the cycle but can also occur early and late. Sperms can remain alive in female body for 5-7 days with optimum fertilizing ability for 3-5 days after ejaculation during sex. So, there are chances that sex 3 days after periods may lead for pregnancy. So, it is better to have protection through out cycle if you don't want pregnancy.