Just a back ground I have been diagnosed with FMS, the doctor thinks I am also in the beginning stages of Lupus. I take Plaquenil and do mostly fine. This past weekend we went to the races in Kentucky and was in the sun and heat all day. We didn't get out the races until 11:30pm. I was so exhausted. It took another jour to get to our hotel. We had a confirmation number but when we got there they didn't have any rooms. (this is another story LOL) But it was a very stressful time. I thougt I was going to be physically ill if I didn't get some sleep. Anyways it was almost 3:30am Sunday before I got to lay down. Anyways I have been so tired and just feel plain sick ever since. Did this whole thing cause a flare up?? Yes my joints are aching, but I feel flu like. Been awhile since I have felt this bad for so many days. To top it off I am on my period also. Is this a normal reaction with this illness. I was diagnosed in 2004 and I feel I am still learning what it can do to me.