Contraceptive products symptoms and conditions

i have endometriosis, as well. i tried doing the vitamin thing for a couple of months but my peroids didn't get any easier, so i gave-in and went on BCPills. i was on loestrin which worked great for the 1st 3 months but then stopped working and i gained 8-10 pounds of water weight. i took a month off and went on yasmin and LOVED it! for the 1st 4 months, it was a dream come true - i lost the water weight, had TONS of energy. well, when i started working out again, around month 4 - i was fine doing cardio but as soon as i'd add weights to the routine, i would be hit with TOTAL exhaustion, muscle fatigue, etc.. i thought i was coming down w/ the flu or a cold and would take some time off...only to try again and have the same effect. this went on ALL summer - then i found out it might be YASMIN!!! apparently the increased levels of potassium in the blood can mess w/ the acidity in the blood and make the muscles hurt. my OBGYN refuses to accept it could be the pill (suggested i get tested for fibromyalgia, depression, etc.). i'm off of the pill now for a week and am still REALLY muscle-achey (sorta feels like the flu). does anyone else have this? does anyone have experience w/ how long it takes this crap to get out of the body? i just started at the gym this morning, only adding cardio for awhile... i am so frustrated!! i'm getting married in 8 months and want to be buff for the wedding but keep getting sidetracked w/ exhaustion. *UGH* can't wait to get yasmin behind me.

I'm glad I came on this site.. My GYN gave me Femcon FE because he saw that I have a cyst on my left ovary. I hard horror stories about birth controls, like weight gain, acne, and nausea.. I am afraid of all three of those.
He told me to start taking them over the weekend and I asked him will there be any side effect and he told me that I would like the pill.. I just gave him a look and said I will be doing some research on this pill and if I read any stories about bad side effect I will not be taking them.
So thanks guys for your comments...
I WILL NOT BE TAKING THIS PILL..
I'll just wait for the cyst to disappear on it's own.