So 5 days after my period ended I had sex with my ex, it was dumb, but it is what it is, he didn't pull out and he cam in me, I'm not on birth control. So it's been 7 days since he cam in me, yesterday I was super nauseous, so I thought that I was coming down with the flu but today nothing, I feel fine. So I don't know. Could I be pregnant? Maybe just the 24hr flu? How long should I wait to test.