I've had my period for 4 years now, and during those 4 years, I've only had this thing happen to me 3 times now. the third time happened today. my cramps became uncomfortable, I started sweating and going pale while in discomfort. and that goes on for at least 10 minutes. I'm shaky and dizzy. I then tried eating spinach and drinking water thinking it could be my iron levels. that helped for 30 seconds. I had this go one for about 30-45 minutes, and this has been the better cases out of the 3 when it has happened. my flow was also on the heavier side because it's my first day. I'm now worried about this because its the 3 time happening recently and its a very unpleasant experience. I was wishing i passed out it was that intense. I was wondering if anyone knows what this is?