I have had similar seizures to what you just experienced, my neuro calls them tonic-clonic and I call them Grand Mal seizures. I normally have complex partial seizures where my facial muscles twitch. You know,my eyelids blink my nose sometimes twitches my lips twitch and my head sometimes moves up and down and sometimes it gets bigger, the seizure that is. I also have a bottle of Ativan that my neuro prescribed. Going to the bathroom either before or after is also a normal thing with me as well as running a low grade fever and my appetite going elsewhere until the next day or so. I also have had 2 video EEG's as well . I think it is a fairly common thing for seizures to be caused by stress so that could be it or the tiredness.
Good Luck
MistyGirl