probably not. you are unlikely to ovulate the day after your period ended. with that said if you do not want to get pregnant it would be wise not to ever have unprotected sex. it is not worth the worry. remember that the body is designed to achieve pregnancy. sperm can remain viable in your genital tract for days just waiting for an egg (ovum) to appear.
my period came on the 19th nov it lasted for 5 days. i had unprotected sex today 25th nov will i get pregnant.