You probably have hyperemesis gravidarum. (Extreme/constant vomiting with pregnancy.) Staying hydrated is very difficult with this because you throw everything up, but it can directly contribute to the vomiting. I ended up going to the ER and getting an IV periodically and they prescribed me Zofran (anti-nausea medication) for it. My sister had this full-term with both her pregnancies and I have had it my entire first trimester. Keep drinking fluids and ask your doctor about potassium or a composite electrolyte supplement. I couldn't keep things like Pedialyte down, but you might be able to.
Your Dr may be able to prescribe something for it. I have had it through my whole pregnancy, every day with everything I eat. I actually turn down some foods because I know what they taste like coming back up Lol.
&& it can happen longer than just 15 weeks. Every pregnancy is different just like Every woman. This is my third pregnancy. I have had sickness through out every one, every day, all day. And with this pregnancy I'm 27 weeks. So if you are still throwing up past 15 weeks don't worry it's normal
Nausea can go up to 15 weeks... try not to be craving and eat small bites. In spiritual case it s that u have to accept fully ur pregnancy to not reject it :)
Try chinese medicine helps with nausea and vomiting. Try to have fresh ginger in hot water. I was realllly lukcy i m phobic of throwing up and didnt