Nausea on the pill.

I’m on my 6th month of birth control (Yasmin) and I’m suddenly soooo nauseas all day everyday when it starts getting closer to my period. Is this normal? I’ve also been super stressed and anxious lately, could that have anything to do with it? I take it the same time everyday and do not take any other medication with it so I doubt I’m pregnant.

Please help I don’t know what to do