Early symptoms

Just wondering, I'm 5w6d and I have felt like absolute crap for the past week and a half. I'm nauseous constantly, which makes it hard to eat and sleep. I overheat when I walk to and from class everyday. I burp like no other (were talking every few min I let out MASSIVE nasty burps)

And I was so dizzy this morning I had to sit down in the middle of my kitchen while trying to make my breakfast.

Is this normal? Or should I go get check out?

When will it stop?? :(