just to add a few things no one has mentioned ....
If you live in an appartment,witch you didnt mention, you should be fully aware that appt. & some homes are notorius for using the chaepest crap they can... often times using inferior products... you should not be using more than 80 % of the breaker .. this gives you a buffer on that brkr .... appts. only put 20 amp brkrs in the kitchen & bath.. if yours is 20 amp in a bed room... someone may have changed the brkr to a larger one, a bad thing ... verry bad.... changing the brkr to a large one does not mean the circuit can handle 20 amps....
you should also check the amp rating on the female plug in the wall... this is verry simple to do.. remove the plug cover screw ... info impernted on the bracket
if your are popping the breaker..changing it may not be the answer.. its popping for a reason.... an obvious overload ... there are more than a few componets involved and all need to be checked..... if you are not sure , you should consult someone who can give you good on site info.......a friend, reletive....
I personaly have seen 20 amp brks feeding 10 or more 15 amp plugs.... use caution when evaluating your situation..... dont want to be one the streets for xmas...
good luck & happy holidays