Hello! Thanks for putting your query in HCM. I am a Gastroenterologist (DM).
It appears to be reflux symptoms. In pregnancy
it's incidence increases as there is increase intrabdominal pressure that leads to more reflux.
So what you can do is avoid fatty meal, take small and frequent meals, don't take meals at late night. If not relieved with above life style changes you may discuss with your doctor for Histamine-2 receptor antagonist
I hope I have answered your query and this will help you. Remain in touch and get-well soon.