One week after first seizure (I think?)

I'm a 39-year old man in pretty good health. Very early last Thurs. morning I went into the hospital. To make a long story short, they think I had some sort of seizure in my sleep because I woke up and did not know things like my name, the year, phone number, etc. I also had a very bad headache and was confused. I went through pretty much every test imaginable (MRI, CT Scan, CAT Scan, EEG, ECG, spinal tap etc) and all came back clear. I was released Friday night after things started coming back. They do not think it was a stroke and its not a tumor. They believe I had some kind of seizure in my sleep. I'm not allowed to drive until after I meet with an epileptologist in 2 weeks. As part of the tests, I had a spinal tap, which has left me with a continuing massive head/neck ache for the last 8 days. Laying down makes it almost go away but I have gone back to work so thats not exactly ideal.

The day before my seizure I had called out of work because I had stomach issues. I basically had the runs about 8-10 times. I know I did not properly hydrate myself during that day and night (stupid). Then, that night, I used a citris-based stripper indoors to strip a piece of furniture. It said it was safe for indoor use, however I did not really create any sort of ventilation. Although the doctors could offer no concrete explanation of what happened to me, they think it was a seizure. I am wondering if the day leading up to it had anything to do with it. I have had 6-7 concussions in my life as well. My best guess is that possibly I am predisposed to seizures and my sickness/stupidity the night before my seizure tipped the scale. Who knows. Anyone have a similar experience?

Not knowing what happened and whether or not it may happen again is really playing on my nerves. In the meantime I have been eating perfectly and making sure I get plenty of sleep and hydration. I appreciate any advice and am glad to have found this resource.