I have PCS and would give you this advise:

Listen to your body if you need to rest, so get plenty of quiet rest.
Avoid too much TV and computer.
Avoid exercise until ready.
Wear earplugs.
Fatigue and headaches are a sign you are doing too much.
Wear sunglasses or hat in the supermarket.
Do things when you feel best e.g mornings.
Keep a diary to discover what triggers symptoms.
Try to avoid triggers.
Concentrate on the things you can do and avoid the things you cant.
Gradually increase your activity.
Do not worry about symptoms - this only increases them.
If you need it get a suitable anxiety/painkilling medication.