I get these exact pains and went to the urgent care clinic twice this week because of it. It started off on Wednesday when I got this horrible pain on the top right hand side of my head, it hurt so bad it actually caused my eye to flex. It lasted 2 seconds and went away. The pain continued in the same area for a couple days, and now the zaps are hitting in different places all over my head. It is really scary and painful. The doctor thinks they are either cluster or ice pick headaches, but I really want an MRI to make sure it is nothing serious though I have no other symptoms. These pains occur a few times an hour, and literally stop me in my tracks.
Are your pains in one localized area or all over? Sorry to hear you are going through this as well.