In the first trimister I didn't really have morning sickness, maybe car sickness for 10 minutes at the most. Now it seems like I can't keep any food down. Nothing helps.
Talk to your dr. They are really the only ones that can give you anything that will help and if you can't keep fluids down you need to call the nurse line or on call dr ASAP as you may need an IV. Ms can last all pregnancy and can start later, flare up randomly or go away. Consider yourself lucky that you had a good first trimester and I hope this doesn't last very long for you. Fluids are a must when experiencing vomiting and or diarrhea.
Re: 4th month and vomiting