ice pick headaches and seizures

I started having these extremely sharp pains in my head as if I was being stabbed. I was concerned at the time because the were starting to be more painful and more frequent over several weeks and I all I could think of was that I might have a blood clot in the brain. I eventually had several grand-mal seizures back-to-back that hospitalized me and I have no memory of half that day. After testing by my neuro. (CT scan, MRI, Eeg, act.) I was diagnosed with epilepsy. I was on Dilantin for about 2 years that kept everything under control except abscent seizures and bad balance issues. My neuro now has me on keppra (750 mg, twice a day) to help control my balance problems because it was getting out of control, some people even asked if I was drunk while I was at work. Now these ice pick headaches are occurring again I eventually had a small seizure which I blacked out and had memory loss. I really don,t have any warning signs that I am going to have a seizure other than these painful stabs in my head, once I start having them frequently I will have the calm before the storm cliche. I won't have any for 2-3 days and they will hit me with a vengeance for a day or 2 then I will have seizure. From what I have read these ice pick headaches are not associated with epilepsy at all but they are my extremely painful sign that I will be having a seizure soon. Every time I have them a seizure follows once they are very frequent. I don't get these headaches except when I start this 2-3 week cycle that ends up in a seizure. My question is there anybody else experiencing these icepick headaches like me that leads up to seizures or know of any good articlesto follow up on this matter? Thanks, Derrick