I was nvr sick with my first two kids.. Im 37&2 and ive thrown up every single day since i found out i was pregnant with this one at 3weeks along. Just stay hydrated id ur not throwing water up like i did.. And before getting outa bed eat a cookie. No joke it can seriously help. Other wise talk to the dr about it. Good luck!
The important thing is to stay hydrated. Make sure you are sipping water through out the day. I know when you are really sick it is hard to keep down as well. I found if I kept water at room temp instead of drinking it cold it was easier on the belly. As far as the baby, I'm sure it is fine. I went over a week without being able to eat/drink due to extreme sickness. The baby will take what it needs from you, unfortunately you have to suffer. Now if you are feeling dehydrated I would recommend going to get your electrolytes check and possibly get iv fluids to rehydrate your body. Best of luck!!
Tell your doctor u have been so sick that u can't keep nothing down they could give u a pill for nausea