Do I have another kind of epilepsy?

I was diagnosed with Juvenile Myoclonic Epilepsy roughly 4 years ago and I am 20 years old. I am currently taking Sodium Valproate (coated) and Topamax. My epilepsy is reasonably controlled but I still get jerks in my arms sometimes in the morning or late at night when I'm tired.

However, for the last couple of years I have been getting these sudden strange feelings where before I could only describe as some kind of panic attack, they occur pretty infrequently but are worrying. For some reason it usually occurs when I am looking at numbers or doing calculations in my head, it can also occasionally occur simply when I am trying to do something, so when I am thinking, basically. I get a sudden feeling that something terrible is going to happen and there is nothing I can do to prevent it, I sometimes feel terrified and I don't know why, but at the time it makes sense to me. It normally doesn't last long, something like 10-20 seconds but sometimes I get the feeling for a split second. I once got this for about 5 minutes. My vision also goes strange, like when I am looking at something it seems much bigger than it is and is hard to focus on it.

I read the information on the Internet about focal (partial) seizures in the temporal lobe and the symptoms seem very familiar. I have the churning feeling in my stomach, I see things bigger than they are (sometimes I experience this and this only), I feel frightened and panicky and I am not really aware of what I am doing. The symptom that stood out mostly for me was the intense feeling of deja vu, like I'm convinced I've experienced something before when I haven't, I have never been able to explain this (said to my doctor I got a strange deja vu feeling but thats all I could do to explain it and I don't think he understood).

Thanks