Miss, welcome to House Repair Talk,
My first inclination would be that since you have had a change in moisture that it would be either a rafter or wall stud that has popped. If you are not having electrical problems I would first look into structural issues. Look in the attic and see if you can see any warped, broken roof rafters. On your siding wall look for any deflection or bowing in the wall. You might want to call a structural engineer to look at it. Usually this will be about the same as calling an electrician, cost wise.