I don’t think that we can prevent it. I did ask my gynae but we can minimise the effects. She mentioned to avoid eating full meals but to go for frequent, small meals. If it’s really bad, you could consider going to your gynae to request for reflux / gastric medication. I did ask her for it but she mentioned to not depend on reflux medication until it’s exceedingly unbearable. My mum suggested sour plums but what worked for her didn’t work for me. Hope it helps :)
Ask your dr for meds like dicletin, I think it helps a little! And I used to carry lemon around to smell whenever nausea comes 😅 like sliced lemons