I'm sorry to hear. I know how you feel. I've been fighting with HG my whole pregnancy. I take vitamin b6 and doxylamine (otc sleep aid) they help with the nausea and vomiting. Also I take my prenatals before I go to sleep bc they make me sick as well. They don't always stay down, but it works better than taking them mid day. Like the other ladies suggested, if your having trouble keeping anything down including fluids, you should go to the er to make sure you aren't dehydrated. I suggest sipping Gatorade or mineral water throughout the day. Sipping being the key word. You can try the anti nausea meds, I opted out of those bc of the possible harsh effects they could have on my baby.
You might need to take a trip down to the ER or your doctors office if you cant keep water down. Dehydration is not something to mess with. The docs will give you fluids and advice on what to do and how to control it. They will probably give you anti-nausea meds and seriously it's been a life saver for me. There's no way I would get through this being healthy without them.
This is my second pregnancy and for me I been sick the whole time with both throwing up every day till birth. I could never take prenatals. Every time I told one I would throw it back up. I even went as far as getting the prenatal gummys and cutting them as small as I could to try and take them threw out the day. I ended up not trying any more. Nothing helped me not be sick I refused to take prescription drugs for the sickness. The side effects saying it could make you nausea when I already am. And the fact I couldn't keep anything down anyway. I was terrified to take them because I don't want to find out 5 years later that it could have messed up my child, I would never forgive my self. Best thing to do is just eat anything you can that you think you can hold down. I lost 40 pounds during my pregnancy and there were many days where I wouldn't eat for 4 days or I would try and throw it all up. Times I couldn't drink water. It was extremely hard. Just hang in there and hopefully you'll be the one who's sickness will go away.