Nausea?

Anyone else get nausea (mostly in the throat area, it's nothing to do with the food I eat since my digestion is fine, I'm sure) near their period due date? I've been having really sick feelings and the log system says things only for dizzy nausea...
It's been getting really uncomfortable for me to deal with as I get headaches/migraines too while in class, and feeling like vomiting doesn't help.
Is this normal? And if you could, maybe recommend a way to deal with it/get rid of nausea?