Hi, I think you should do a thyroid profile. Sometimes deranged thyroid profile can lead to excess vomiting. If it is normal, she is having hypermedia gravidarrum. It will resolve by 3 months. She will be on medicines like doxylamine, pyridoxine. She can take some anti-emetic like ondansteron. If it is excessive, injection will be needed. Tell her to take fluids in little amount at frequent intervals. Hope it helps.

Hi,
Thanks for the query.
I understand your concern.
If she can not digest anything&is dehydrated.. take her to ER... she needs iv fluids to make her blood pressure nprmal. Zfollowed by injectable medicine to control vomitting.&also Iv multuvitamines to maintain her health status.
This should allow her intake of fluid diet ( water,ORs powder in water..juices... non spicy soups &then bland food (boiled rice.. bread with milk.along with anti vomitting pills & antacids as per doctor's advise.... gradually start normal diet.
Vomitting pills should be continued till she completes 12 weeks of pregnancy.
Thanks