Can this really be epilepsy?

So I'm 31 years old, and two years ago, I had this very strange experience. I was about to leave to go to a friends house when suddenly, I couldn't remember where I was going or why. I looked through old phone messages remembering none of it, even though they were clearly messages I had sent. After a few minutes I was back to normal, albeit shaken and pretty scared, and spent the rest of the day in bed hoping it was a one off. It wasn't, but it also was the most unique 'attack' I've had, in that I still remember it even now. After that, every week or so (sometimes 2-3 weeks, but sometimes multiple times a week. Sometimes more than once a day. The longest I went was 4 weeks without an attack) I would have this strange dizzy feeling, seemingly triggered by random thoughts I can never remember, followed by a feeling I can only describe as deja vu, followed by.. well I don't really know. I can never remember the attacks after they've happened anymore. They usually last between 30 seconds & five minutes, but to me, it's like no time has passed and I'm suddenly somewhere else. Either laying down in bed or surrounded by people asking me if I'm okay etc. Other times I apparently carry on as normal. It happened once while I was at work on my lunch break, I remember feeling strange as if an attack was about to start, someone coming in to ask me a question, then nothing. Next thing I remember is being back at work like normal. I asked my co-worker if I did or said anything strange but she said I seemed normal, although I did have my head in my hands when she first walked in. There doesn't seem to be anything that triggers these attacks, they just seem to happen at random. I have managed to capture these attacks on video a few times. Once on my webcam where I just sit there with my eyes closed for a few seconds then turn off the webcam, and another from the CCTV cameras at work, where I just stand there with my head in my hands hunched over a trolley, then one of the supervisors asking me if I'm okay. I look pretty normal after that although slightly out of it. The first neurologist I saw didn't seem that concerned or interested, and was pretty certain it was epilepsy almost straight away, so immediately put me on Levetiracetam. Unfortunately, it which made me feel awful and did nothing to stop the attacks. I have had three MRI's now which have all come back normal (aside from an 'arachnoid cyst' which are apparently very common and rarely cause issues. The last MRI I had was to make sure it hadn't grown in size which, thankfully, it hadn't) as well as multiple EEGs which, again, were perfectly normal. The neurologist then told me it was unlikely to be epilepsy, and could be Anxiety & Depression related. I've always been a very Anxious person so I went along with it. I was put on citalopram which, again, just made me feel worse and did nothing for the attacks. If anything, they increased. I'm now seeing a different (much better) neurologist who actually seems to care and we're back to thinking it's epilepsy related. I'm now on 150mg of Lamotrigine and the attacks have seemingly lessened. When I was on 100mg I went a whopping 7 weeks without an attack - the longest by far. I haven't had another episode since being on 150mg although it's only been 3 weeks. My concern comes from looking at people talking about absence seizures, and how they typically last only 15-30 seconds, where as mine can last several minutes. My other concern is my general memory. I've never had an amazing memory but I definitely seem to have gotten worse at remembering things short term. If someone asks me to get something at work for example, there's a good chance I'd have forgotten what I was looking for by the time I get there. I know that happens to everyone from time to time but it seem's to be happening to me a lot more often recently. It also seems to be effect long term memory. I have these strange 'gaps' on my memory where I don't remember certain events. Not like I forget about them but remember when reminded about them, more like it never happened. For example: I play a lot of video games and I was speaking to a friend about a game I had wanted to buy, only for him to tell me I already own it, and had lent it to him about a month or so ago. I still have literally no memory of buying or lending it to him, even though I clearly did. Scary. Things like that keep happening. It can be events that happened a month ago or something that happened years ago. Another example: A few years ago I bought a game console from a friend of mine (same friend) but again, have no memory of doing so. If you'd have asked me, I would've said I bought it new. I've also had trouble sleeping recently. It takes me a long time to fall asleep and I sometimes don't wake up until gone midday. I also feel quite dizzy and out of it at times These things keep happening and it's quite worrying. Could it be the medication? The epilepsy itself? Or something worse that may have been missed? My main fear is these attacks suddenly getting worse. Like if I pass out and hit my head, or them evolving into full on seizures. I keep telling myself the medication sees to be working and everything's going to be fine, I just can't help but worry. (All this googleing isn't helping!) So, yeah! If anyone has gone through anything similar or has some success stories with Lamotrigine I'd love to hear it. Thanks for reading.