Dream-like Episode. Is this a seizure?

I had an episode a couple nights ago where I felt like I was remembering a dream. After a couple of seconds, I was fully immersed in this memory/dream. I was aware it was happening, but couldn't pull myself out of it. It lasted for a minute or two, and when I came back, I was nauseous. Right before the episode, I felt tingling at the base of my skull. After it was over, I couldn't remember anything about the memory/dream, just that it had happened. This isn't the first time this has happened. I've been having these "episodes" since 2011 (when I was 20). There's always some degree of familiarity to the "dreams." Kinda like deja vu. I am completely awake when they happen (they've happened while taking a shower, cooking, walking on my college campus, etc). The one Friday night was the worst I've ever had. I saw my GP for them in 2011, and he wrote me off. Has anyone else experienced anything like this? Could it be a seizure? My grandmother had epilepsy, so there is a family history. I do have a doctor's appointment next week, just wanted to get other's input as well.