Nausea Help?

I'm about a week out from my period. I threw up today and still feel super nauseous. I've had spotting for the past couple of days (never had spotting before). My breasts are tender. I'm exhausted. Paranoid I'm pregnant, but wanting to wait until I'm late to test just in case. Anyways, point of this is, I need help with the nausea with household cures for it that are safe for pregnancy. I don't want to leave my house because it's late and I feel like crap, but also if I am pregnant, I want to be safe.