Is This Normal?

I'm Normally Not One For Giving Oral But We're Grown So I Feel Like Saying Oral Is Nasty Is Childish And He Was Constantly Doing Me So I Tried It Or Whatever. It Was Ok But After Doing It A Couple Times My Partner Wanted Me To Swallow His Semen So I Did Twice And Both Times Afterwards I Felt Really Nauseous! Is That Normal?