While mma sparring with my partner and taking him down about 8-10 times, he was finally rly ready for it and kneed me in the temple causing me to have a white flash. The flash felt like 2 or 3 secs but in reality it was a second or less because I saw the flash in the middle of my double leg and has soon as he hit the mat with me in side control the flash disappeared. I was fine after it disappeared until about 30mins later I was sparring kickboxing with a bigger opponent and caught a flush backfist right to the temple and again saw a flash but then came to as soon as I hit the ground. I didnt feel rocked when I hit the ground, just embarrassed. Anyway my question is is a white flash common, or was I close to getting knocked out. Also, when I ate the knee to the head, I shot to the correct side so it was only his lead leg that kneed me, but nontheless I saw a white flash. Does that mean I am easy to knock out?