Hi,
If she is otherwise well apart from the nausea and vomiting then this may possibly be related to the head injury. It would be unusual for the head injury to be causing a problem like this at this stage after the injury but I think it should be ruled out as a cause.
A commoner cause of persistent nausea and vomiting is vertigo. This is often associated with the sensation of the room spinning around. A visit to your doctor would be advisable.
Regards,
Dr K A Pottinger
MBChB FRCA

hello
nausea and vomiting can be serious as they harm your health and body mechanism... since its only a month to her accident i think you should see your doctor and a gynecologist as well to rule out pregnancy because sometimes urine pregnancy test are not reliable...you also mentioned that she hit her head .. head injury also leads to nausea and vomiting ...so looking for a doctor is must.....
hope it helps

Hello Good evening,

As per your description things are indicated that you should go for a CT scan Head to rule out Chronic Subdural Hematoma(SDH)/Extradural Hematoma (EDH), which can be occurred by such type of head injury.

More likely you will get a definite diagnosis by a CT scan, which is very needful is this case.
After diagnosis it will be very easy to track a line of management.

You should go for the more favorable cause because she had hit on head and followed by nausea and vomiting, so why are you thinking about pregnancy ahead of head injury, and even pregnancy has ruled out now.

So go for a CT Scan Head followed by Neurosurgeon's opinion.

Regards,

Dr. Naresh Jain.