Hi , At times I will get very lightheaded And somtimes i see dots ... I dont get up very fast now but ill still get lightheaded every now and then ... Sometimes When i reach up to get pants in my closet ill get really light headed and start seeing dots in my vision , SO ill have to sit until it goes away.. One time i reached up in my closet to grab a shirt , and I felt lightheaded but this time i ignored it , when i grabed the shirt i brought my arms down and i started to feel light headed and then out of nowhere my vision went completley BlaCK l.. I felt for the floor and sat down and i tried to keep calm ... my vision was black for about three minutes until it finally i started to see dots and then ,my vision was back to clear ... idk if this is dangerous , normal , or if it could cause me to go blind ,... id like some advise or know if i should go to the doc ... thank you. -Rosa