I have seizures but I haven't had one in almost a year and I wanna Join the Army?

I have had every test possible (i.e. Cat Scan, M.R.I., EEG, Sleep Deprived EEG). All Scans came up negative everything was normal. I have had blood tests and they have come back normal as well. The Doctor has put me on a controlled medication. I Didn't start having them until I turned 17 and any doctor I have gone too puts me through all the tests again and when they again turn up negative they just say I will grow out of it. My Mom has grand mal seizures but I am the youngest out of 4 Children I'm now 20 and the condition is still present. I am a first degree black belt in taekwondo and have been in taekwondo for 7 years when I train and am active my seizures seem to stop. So I wanna know if I can join the army?