I've been taking trinessa (norgestimate and ethinyl estradiol) for a year if i take it earlier than normal could it cause nausea?

Maybe: Trinessa (norgestimate and ethinyl estradiol) and all combination birth control pills can cause some nausea. You can take your dose in the evenings so this effect happens while you're sleeping. It's important to take your pill at the same time everyday. There are other methods of birth control that don't cause nausea if this doesn't work.