Hello
Thank you for your query.
Nausea and vomiting during pregnancy are common.
However, your girlfriend seems to be suffering from an exaggerated form of the same, called
hyperemesis gravidarum.
In this condition, the nausea and vomiting worsens to the extent that normal meals cannot be retained.
You need to consult a gynecologist, as the resultant
dehydration can have negative impact on her and the growing baby.
She needs to get her
complete blood count, liver and renal profile, serum electrolytes, thyroid profile checked and an ultrasound done.
Also, she would require intravenous fluids and
resuscitation, and vitamin B 12 and
doxylamine therapy.
She needs to modify her diet - have small frequent meals, avoid spicy, greasy and oily food, take bland diet, increase probiotics such as curd and yoghurt in the diet.
Take care.