Make sure you have plenty of fluids, and you don’t dehydrate. Dehydrating will make you more nauseous than you have to be. This may gross, but, try to stay away from foods that wouldn’t taste good coming back up.
I ate solid high carb type foods. Getting some fresh air can help a bit. Also sucking on candies or lollypops was good.
If your nausea gets sever, and the Dr. wants to prescribe Phenergan, ask for a prescription of Zofran. Zofran is safer than any other nausea medication when pregnant.
I couldn’t keep anything down for the first 5 months, unless I took Zofran- that was a miracle drug.