Matt, be very careful about suddenly coming off your anxiety/depression medicines. You should speak to a doctor before you do this as you may need to come off them gradually. It may be dangerous to stop them suddenly - it would be dangerous for me to suddenly stop taking the beta blockers I am on.

Stopping many medications will give you withdrawal symptoms which will likely include headaches. Once the drs find out you've suddenly stopped taking something, they may well attribute your symptoms to a withdrawal. It's better to be up front and honest with your doctor, remaining calm if you can!

You say you're taking the following:

Valpromide 300mg (morning and evening)
Oxazepam 5mg (morning and evening)
Chlorpromazine (12.5mg morning and 25mg evening)
Escitalopram 10mg in the morning

I don't know much about them except that Oxazepam is a benzodiazapine - you should not suddenly stop this without speaking to a doctor.

Let us know how you get on!