I've had 2 almost, the first I'm not sure if I did or didn't, but something tells me I didn't, but here's my stories:
1st time: I was camping and we left some stuff in the back of my dad's truck(was like 10 or so at the time) so I went out there and was going to open the tail gate and jump in the back and push everything we needed forward(we figured we forgot some stuff cuz it was in the back back of the tailgate, me being the smallest got sent back there) So, I went outside and was opening the tailgate, and ya know how you lift up on the little lever thing? I somehow, while lifting it up, got a chunk of my hand(between my thumb and first finger on both sides, by the knuckle of my first fingers) almost caught in it, and it tore a few layers of skin off. I just shrugged it off, and started to climb back in the truck when I noticed my hand was bleeding pretty badly. I felt kinda faint at the amount of blood that was coming out of this "little" cut. So I run back to my parents and my mom brings me in the bathroom to clean my hands out(staying in a cabin) and started cleaning my hands out, and it wasn't until then that the pain hit me, and it hurt. I suddenly felt very light headed, dizzy, and there was a pounding in my ears where everything said to me was like through a tunnel. I remember my mom putting bandaids on and someone saying that I looked really pale, and the next thing I know, I was laying on the floor(a few feet from where the bathroom was) no idea how I got there with a glass of water being shoved in my face. After that, it was like bam, dizziness gone, pounding gone. very strange. I was perfectly fine after that....besides for the scars left there *shrugs*
Next time, My mom, sis, and I were at the mall and I generally don't eat breakfast, I'm just not hungry in the morning, so I don't eat. If I know it's going to be hours before I eat anything, I'll force a piece of toast down or something, but I was absolutely not hungry that day, so I didn't eat. We were in this one store and I don't remember how but I noticed a papercut on my finger and it was barely bleeding, and I remember it getting pretty hot in the store, but it's not unusual so I stepped into the hallway and I began to feel dizzy. My mom and sis come out of the store and we start walking over to the next store across the hall(not 10 feet) and I felt like I was going to fall over, and I remember calling to my mom and just falling to the floor. I never actually passed out, but I guess this lady walked by, who happened to be a nurse, go figure, by that time my mom told me to rest my head on my knees, which I was doing, but the nurse shoved my head down further, and I guess my mom sent my sis after a pretzel and water, and I was slightly feeling better when she got back, and I forced the pretzel and water down and was again, fine, alittle drained but fine. It's strange how the body works, so now I usually make sure I eat something before a shopping trip, lol