Tired of being nauseous

It’s week 12. I’ve been trying to eat small regular meals, drinking water when I can. It’s still frustrating and tiring that im still vomiting my guts out almost every night. When I didn’t vomit for 2 days, I thought the worst is over. The next 2 days, the vomiting came back with a vengeance. How long more will this go on. So tired of vomiting.