Has anyone experienced these PMS symptoms about a week or so before their period is due? It happened to me once a few months ago and it happened again today. I started to get hot flashes (I am 25) and feel clammy, dizzy, faint, and weak. My vision started to get blurry and my hearing started to fade out. It felt like it lasted forever but I think it was only for 5 or 10 minutes at the most. The first time it happened, I was standing up. This time, I was sitting down and felt like I could barely hold myself up. Any idea what this could be?