Advice on SPS episodes

So I totally understand that when in doubt you ask your doctor but I just wanted to see what everyone's general opinion about this is.

I'm not a diagnosed epilepsy sufferer but 90% certain that I experience SPS episodes from time to time. I get real intense deja vu, a slightly dull pain in my arm/shoulder and a pretty bad smell which I can't quite describe. The whole thing is totally surreal and I can't wait for them to be over as soon as they start.

My question is generally speaking can these potentially develop into more severe forms of epilepsy? I worry about it from time to time but I've been getting these for at least five years (that's the first one I can remember) and they only happen once every 3 - 4 months, never really getting any worse than they already are.