Gastric Problem and keep feeling nauseous

At week 10 and feeling heartburn for the past 3 weeks. I am not sure if heartburn and morning sickness are linked. I wake up in the morning and feel like puking after 5 mins into the day, but I didn't vomit at all despite feeling nauseated. Experiencing reflux, discomfort right below my chest and like something stuck in my throat. Everything I eat seems like lingering on my tongue and very dry from swallowing saliva. Can't eat much when hungry, can't don't eat too. Saw people suggesting gaviscon too! So I went to buy gaviscon ytd and it really helped! I bought "gaviscon double action" and it helped the stomach part for awhile. Husband went to check and saw that gaviscon website suggests for pregnant ladies to get "gaviscon advance" instead due to the lower sodium contents.