What Caused Dizziness In Eyes?

I was sitting here on my computer, when I started to feel very hot, like burning, I opened a window and felt a little better but still felt hot, then I started feeling dizzy, like I was going to pass out. I stood up to go to the bathroom as I was using the bathroom something on the ground caught my eye, as I started looking at it I felt as if the room was spinning and it didn´t stop until I looked back up and focused on my breathing, I didn´t feel short of breath or chest pain or numbness in face o anything like that. I am severely obese 5ft 11, 295 lbs. I take 16mg Atacand which is a blood pressure medicine. I just checked my blood pressure says 130/90. 87 bpm , I haven't taken my medicine yet for bp, I usually take it around this time everyday. any idea what just happened to me ?