Eating all the time to keep sour stomach away!

Brielle
I feel like all I do is eat! I am 6 weeks and 5 days and constantly have a sour stomach. The second I don't have anything in my stomach the nausea, sour feeling comes back! I am trying to make healthy choices but I very well might gain 500 lbs during this pregnancy!!! Anyone else with me in this boat? What's your favorite go-to healthy snack?