Terrified of what's next

I'm new here and I'm seeking comfort. I had my first seizure ever at 23 in December 2014. Just started a new and much more stressful job with late night hours. It was a Friday and I hadn't eaten all day due to my work load and decided to meet friends for drinks and food after my shift. I was walking to the food place with friends when all of a sudden I started seeing things in my vision (almost looked like black dots with words) I got confused and next thing I knew I was in the back of an ambulance and my boyfriend at the time told me I had a seizure. Completely terrified considering this was the first health issue I ever experienced. He said I was shaking and my face pushed to one side. I must have been out of it for 15 minutes or more but the seizure didn't last long. Went to doc and he said there was a very small chance it would happen again so I moved on and never was put on medication. Fast forward exactly 7 months later and I'm at work heating up my dinner when I experience the same visuals, feel instant panic and I know what's about to happen. My coworker (now boyfriend) found me and called for help (only two people working at the time) he said it lasted a couple minutes and my eyes were all over the place and my lips turned blue. Same thing happened where the seizure stopped but I was still out of it for a while. Tests all came back normal but my doc prescribed me 500mg of keppra twice a dAy. So far so good 8 months later but the anxiety I get from all this is borderline crippling. I've lost confidence and I'm terrified it'll happen again. I was never officially diagnosed with epilepsy and I also was checked for heart issues. The only thing I can pinpoint is that both days I hadn't eaten a lot so now I'm always eating and carrying food just in case. I just want to know if anyone else has suffered the same mid 20s seizures and how they've coped. I'm lucky to have a supportive family, boyfriend and friends but they don't truly understand what it's like to feel completely betrayed by their body. I just want the confidence to come back so I can move on and be better.