Pregnancy...

Okay so my significant other an I are trying to start a family... So haven't been protected during sex I have been so nauseous lately.. I'll eat an than feel like throwing up.things that would never gross me out now gross me out an I'm leaning over the toilet gagging . For the past 3 weeks I've been like this . In the past few days I've been light headed an dizzy an still nauseous. About a little over a week ago I had a period that lasted 3 days.. Now I am still having all these symptoms only now my breast are hurting as well!! Any advice ladies?!!!!