Hi. I'm 21 and for the last year or so I have been getting incredibly exhausted the week before my period. I feel weak and flakey and find it difficult to get moving. A couple of times this has gone to an extreme. back in October I came over ill and thought I had flu. I was working as an editor on a film at the time but felt so bad I had to phone the director and say I wasn't sure I could make it in. as I walked to the phone I suddenly lost all my energy and colapsed. I couldn't even hold my head up. my boyfriend and his housemates (I was staying at his) tried to talk to me and they picked me up and carried me to a bed but I couldn't speak back. They thought I was unconcious but I was completely aware of everything happening around me. since then it's happened twice more. The symptoms are as follows: feel on verge of blacking out for about half an hour, extreme weakness, confusion (inc. difficulty forming sentences, lack of concentration and sense of unreality).

endometriosis?…Endometriosis is a condition in which the tissue that normally lines the uterus (endometrium) grows in other areas of the body, causing pain, irregular bleeding, and possible infertility.
it can also effect the brain and other parts of the body

womenshealth.about.com/cs/endomet…

A woman who has a mother or sister with endometriosis has a 6 times greater risk of developing endometriosis than the general population

nlm.nih.gov/medlineplus/ency/…