Just had my VEEG - horrible symptoms

Hello, I'm new to this - a couple of months back I developed an intermittent myoclonus which became continuous (constant, rhythmic jerking in my abdomen, leg and arm) one day in May. I went to A&E and got a diagnosis of dissociative movement disorder. They treated me with clonzepam, and it got better. Since then, it has been mild but has carried on. I noticed in between all this that when I miss a dose of my Lamictal (which I take for depression), it comes back worse. My neurologist sent me for a sleep deprived EEG as part of the normal ruling out of seizures when you have a functional neurological disorder. During this VEEG today, the technician had me do the overbreathing for 3 minutes. Near the end, in the last minute or so, I started to have the myoclonus. There was both the brief twitching, but then I got the strong contractions in my abdomen lasting 1-2 seconds. It subsided after the breathing went back to normal (over the course of about a minute or two). Then the tech had me sleep, and I was jerking and jumping briefly so took me ages, and had a sort of weird anxious sweaty feeling. After I slept she did the photic stimulation. it started out ok, and then once the frequency increased the jerking started again - sort of spasms of a few seconds. When it got to the point the flashing was near continuous I had to make her stop, it was awful. My question is has anybody experienced this? I know that in epilepsy the flashing can trigger a seizure, but it wasn't a GTCS and I didn't lose consciousness. But I got it with the hyperventilation too, and it carried on into the sleep phase too. They also don't think I have epilepsy. I'll hear within 3 months apparently - but i sort of want to know what I'm in for. Thank you!