Before having sex took birth control tri nessa 4 hours early than i normally take it should this cause throwing up feeling day after sex?

Unlikely: Do your birth control pills cause you to be nauseated normally?

TriNessa (norgestimate and ethinyl estradiol): Although this medication is designed to be taken at the same time every day, taking it 4 hours early is unlikely to cause nausea the next day. That being said, it is equally unlikely that those symptoms would be due to pregnancy - the medication should still be efficacious. The nausea is likely not related to any of the items in the question.