Period, sleep and seizure

Hi my name is Brittany, and I am 17. When i was 3 i was diagnosed with petit mal and it only happened every so often. After, when i was about 15 or 16 i got my first period and a couple months later I had my first big seizure and i went to the hospital they did MRIs and etc, everything was fine. (Doctors said it wasn’t exactly grand mal). The next month i had another and i don’t think it was when i was on my period( i could be mistaken because it was in February and i don’t really remember), but it was also a night where i stayed up kind of late. Then another seizure happened when i was approaching the end of my cycle on a trip at a hotel, which that night i also stayed up pretty late but not too late. It basically happened every time i was on my period and or stayed out late. I have stayed out late before, when i was not on my period and it did/ has not happened.For example, a couple days ago i went to a concert with my friend and went to bed by 12:00 am and nothing seemed to happen. Which leads me to think that it is both my period and sleep deprivation combined, but i am not quite sure. I am now taking Keppra and it does not seem to help. I am also being really cautious of what time i go to sleep in general and not just when i am on my period. Also I asked my doctor that day of the concert, if i could go (only because i was being cautious) and he said yes. I also talked to him about this whole thing with my period, he said he would not be quite positive about it, but there is a high possibility i can be seizure-free once we narrow this down. If you guys have any suggestions that would be great. One more thing is that because of my age i am totally bummed about not driving anymore, and only 3 of my closest friends know about my seizure, the rest of my friends just ask why i am not driving anymore, i always find a way to make an excuse because for some reason i am scared to tell them( i know it sounds dumb) but if you have any advice for that, as well,that would also be great.