Oh yes, the cycle has much to do with a flare. I remember being much worse around my cycle, and like you, feeling as though I was going to pass out because I was losing so much blood. Please, call your doc and tell them that you are feeling this way. I actually did pass out, much to the dismay of my coworkers. Your doc can give you some advice as to what to take. I personally find the Vitamin B-12 has worked wonders for me -- there is also a shot that can be given to give you more energy -- but still, I think you need to consult your doc. Take care, hope you are feeling better soon.