Thank you so very much for your responses!
it really depends on the kind of protection you're using. getting pregnant isn't always an easy thing, but it's best to take precautions. Take a test, or get bloodwork done if you're worried, but if you had your period, you should be fine.
I would like to say NO, but these days it seems anything is possible. So with that being said.... first, it's not a very fertile time at all, and second, if there is no sperm going into the vagina, then no.