If you feel like your mental health is not good. You need to consult a Psychiatrist for your own good.
Regarding your headache , need to get a detailed history, though it might be Tension-type Headache for which you could take an analgesic.
For vomitting initially - you can take Tab. Emset 4mg SOS.
Next Steps
Consulting with a detailed history.
Thank you for asking.
Hope I was able to curb your doubt.
Stay healthy.
Health Tips
Mental health is as important as Physical health.