Hello,
Without being able to examine you or take further history, I really can't say for sure what is going on.
It's possible that the
vomiting is from the antibiotic or cough medicine. It's also possible that a virus that is causing the cold symptoms is also causing the vomiting.
Typically, it is not advisable to take an antibiotic for a cold as these are viral infections and antibiotics are for bacterial infections, so I'm not sure why the doctor gave you an antibiotic.
A headache and
neck pain, if it is muscular neck pain, maybe from the strain from vomiting. However, if it is a
stiff neck, such as pain when you flex your neck or bring up a leg straight when laying down, and
fever, then you must go back to the ER to rule out
meningitis.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. Bonnie Berger-Durnbaugh,
General & Family Physician