Hai mama, memang ni pengalaman yang scary dan exhausting, especially sebab first time kena rasakan macam tu. Angin dan gastrik memang very common dalam pregnancy, especially early weeks ni sebab hormones tu mempengaruhi digestion kamu, so you're not alone lah.
Dari apa yang boleh kamu try: makan frequent, small meals je (jangan tunggu sampai lapar sangat), avoid oily atau heavy foods, drink plenty of water throughout the day, dan try gentle walking kalau boleh. Some mummies swear by ginger tea or plain biscuits before get up from bed. Since doktor dah confirm dan bagi ubat, better monitor symptoms lah, kalau muntah jadi worse atau tak boleh telan air, definitely balik check dengan doktor ye, sebab need to make sure kamu staying hydrated and baby getting enough nutrients.
Memang mentally tough ni, tapi dengan time symptoms tu will ease off, usually around second trimester. Jangan feel bad about taking it easy at work, body kamu sedang do something massive sekarang, so rest is legit part of the recovery.