Passing out and seizures

I am 21 and have been passing out since I was in Elementary school. I didn't really think much of it until it started happening more lately. I have passed out a total of 10 times and since I joined the Marine Corps things have been getting worse. When I was in Okinawa, Japan I passed out 5 times....and now I pass out back to back. But the second time I pass out I am now having seizures. Before I pass out I can feel it coming on, I get nauseous, I get clammy and sweaty, my body starts throbing, I get really shaky and see black dots, my mouth starts to water and it gets hard to breathe. When I wake up I am disoriented and everything is unclear and it gets hard to hear. I typically get embarrassed and end up crying. I don't have bowel movements or urinate on myself when I pass out. I do get headaches more often...some times to the point where I can't read things even if I focus really hard, also when I am driving or moving and I stop it lookd like everything is shrinking. The left side of my nose and lips go numb when I get bad headaches. My feet go numb more often and I get a sharp pain in my right foot. I have gone to medical for this twice the only thongs that have been down were EKGS .....nothing else the last time past out was while I was in formation they took me off to the side and again I was disoriented, emotional and it was hard to hear, the Sgtmaj was questioning me while I was sitting down and I passed out again the doc asks if I was epileptic and said I had a seizure they took me to medical did an EKG and then refered me to a Neurologist after 2 months they have contacted me with an appointment and now waiting to see what course of action they are going to take.....