Is it normal to have a headache after a hair transplant? (Photo)

This is something that will need to be evaluated by your physician.  The practice in which you received your hair restoration should have a 24 hour answering service, and I advise you, and anyone in this situation, to contact your physician.  There is no substitute for a physical examination, and for something like a "constant crazy painful headache", it would be wise to be seen by a physician within the next 24 hours.

Crazy pain in your head is not something you should be consulting your clinic or a physician. This is not normal healing post op.

Each person may experience pain differently.  In general, most patients don't experience too much pain after a FUE procedure.  After a few days they report almost on pain.  Maybe some minor discomfort.  In rare instances, some may have pain that lasts a few days longer.  In the end, you need an exam and a recheck with your doctor to make sure everything is OK.  Photos do not substitute for an exam.  The may be medications, medical issues, or surgical issues only your doctor is aware of. 

This could be serious and it could be nothing. The clinic should have given you an on-call 24 hour number so I would reach out to them. 

It should subside shortly and may be related to stress, rather than something critical. If it does not go away, call your doctor and ask, don be shy.

You may notice some tension the first few days after the procedure.  But if it is constant and will not go away, you need to visit your doctor for a follow up visit.

Definitely not normal. Please see your primary care physician for a proper evaluation, diagnosis and treatment.