Digestive issues during pregnancy

Ever since about week 6, my appetite/digestion has been all wonky. Obviously with the nausea from weeks 6-12, but I feel like the intense nausea and vomiting has tapered off for the most part. Now I feel like I’m in a constant state of digestion upset where I’m hungry but also nauseated, no food sounds good and I’m never satiated. I eat about half the portion size I used to at each meal, but then am starving/nauseous in about an hour or two and have to eat again. Every evening I get reflux/heartburn and just feel bloated and full of acid, no matter what I eat. Is this normal? Does this last the whole time? Will I ever feel back to my normal self again or not until delivery? I’m 14 weeks, btw.