Severe nausea

My nausea is coming back just as strong as when I was first pregnant. I've been on medication my entire pregnancy and it really helped in my first 2 trimesters. Lately I haven't even been able to sleep because I have to keep swallowing down puke. Anyone else in the same boat with any natural remedies to try? I've been eating small meals throughout the day already and am taking B6 as well.