Ironing Injury?

Twice a year I take down all my curtains,wash and iron them and wash all the windows. Since we are hosting for Easter tomorrow and I have 2 weeks off from rehearsals I figured I'd try and do at least the downstairs this week. Apparently my forearm muscles are very weak because my right arm is swollen and I can barely pick things up!!! This is very strange and has never happened before. Seriously it hurts to type. Sorry for the weird post!