Feeling like an never-ending hangover

I am nearly 39 old and recently found out i am pregnant after trying for over a year. My last period started July 16, so this makes me about 5 weeks 4 days. When i met the doctor after doing my blood work and pee test, she said im strongly positive (whatever that means, i was to nervous to even ask). For the last week ive been feeling horrible, i compare it like a hangover, i do not throw up, just feel nauseated, light headed and not hungry... hopefully that fades away and the remaining of the pregnancy gets smoother.