First off, I hope you are doing okay, and you are getting the answers you need.
I know exactly how frustrated you are, as I have been through the exact same thing. When I was 20, I had a gran mal seizure in my sleep, and woke up in the emergency room. After a myriad of tests, all coming back normal, I was put on dilantin for a week. The neurologist I had at the time decided that the dilantin wasn't the right drug for me, and changed it to tegretol, which I was taking up very much against my will until last october.
I have had five seizures in my life-one of which I had after I begged to be taken off the drugs. I thought since I felt fine and hadn't had any other seizures I was fine. I had been tested all over again for everything under the sun, and since all came back normal, my doctor weaned me off the tegretol. Exactly one month to the day later, I had another seizure-in the car, right after picking my husband up from work (he was driving, thank god) in front of my then two year old daughter-who is now seven and still remembers what happened-which I don't. Needless to say, I was put right back on the tegretol.
I had been on a low dose of tegretol for years with no gran mal seizures until this last october, when again I woke up at three in the morning to find myself surrounded by paramedics. That was when my doctor decided to change my meds back to dilantin. I feel great now, as long as I get enough sleep. I hadn't realized before how loopy and out of it I had felt for years, and I think that a lot of that had to do with the meds and the dosage I was on.
I have even had two healthy daughters.
all I can say is listen to the advice you get from your doctors and hopefully you will do okay. It's tough to not get any answers you want as to why and how this all came about, I know. I still don't know why or how I ended up epileptic and it has taken me years to accept the fact that I can't do anything about it. I really only have begun to accept it, and here it is nine years later.
Hopefully, this site will help you. I know I wish I had found it when this first all started with me, rather than an hour ago!