Senseless three time while going to work

I became senseless in trains.I felt uneasy and thirsty but I couldn't ask someone for water, As per eyewitness, my whole body fell from the train seat, eyes were rolling and whole body was straight, it's like a stroke. After they splash water I get my sense. After sometime when they took me at the platform I senseless again. Then they struck my back and splashed water again. I got back my sense then I ate a sweet from my tiffin box as I thought that it may give me energy.And surprisingly I felt well after eating that sweet and then they took me to the first aid centre where my pressure was checked 110/60. I don't have sugar.In that morning due to the hurry to catch the train I didn't complete my meal and after that I didn't take rest as I was in a hurry. My pressure is normally high. My routine for office days is rice meal  8am-tiffin 2pm - dinner8 pm. I tested sugar & cholesterol it's ok. I have tension in my mind it's like an office promotion, loan pressure, family etc.