Can i get pregnant a week after my period ends?

Yes: One week after the end of the last period is a great time to get pregnant. That's when some women ovulate, although many women ovulate a few days later (it varies depending on the total length of one's menstrual cycles, and depending on the total number of days one's bleeding period is). Thus, be sure to have good contraception plans in place if not married, settled down, and starting a family.