I've been on mivroval since february this year i take it at night at around 8 or 9 but the past 2 weeks i've been feeling very lightheaded and nauseous kinda like pregnancy symptoms is there a possibility that i could be pregnant?

Hard to guess, but: It can be hard to tell if a woman is pregnant because some of the symptoms seen in early pregnancy can also happen in non-pregnant women. A home urine pregnancy test gives a reliable result by 3 weeks after sex (3 weeks after when conception might have occurred), or 1 week after missing a regular period or missing a withdrawal period.