 [ Symptoms ] i had sex yesterday and it was my 2nd day on my period my boyfriend came inside of me will i get pregnant [ Disease ] it will not hurt him but it is unnecessary only two doses are recommended one at age 1 year and another before kindergarten age 4 6 occasionally if one of those doses were omitted or more commonly records were lost and parent is unsure if a second dose was given or not another vaccine can be safely given