Very unlikely .. Sperm can only like up to 7 days inside u.. If you've already have your period ( it's been all washed out /sperm) and you won't ovulate until two weeks after your period ends .. So it's very unlikely ...
If you got your period, it's probably really unlikely that you're pregnant. Most women ovulate 2 weeks after their period. If you're that uncertain, wait a couple of weeks, or wait to see if you miss your next cycle, then test. But IMO, the chances are that you're probably not pregnant.