Like others, I would suspect a possible petit mal and suggest you need to seek medical advice sooner rather than later. My late husband had them periodically, and forgetfulness of what came before and after part of it. His began at nineteen after attending an all night fire in London during WW2. He had a number of tests and told there was no epileptic brain pattern, and believed to be a one off. He continued however to have the rare occasional petit mal which always a concern. Then at the age of 48 he had a grand mal seizure and was finally diagnosed as epileptic, although still no identifying brain pattern. Placed on drug therapy, Phenotone, which he took every day, and, as a result, remained free of either episode for the rest of his life at 82.