While most house outlets are connected to a 20 amp breaker most standard outlets are only rated for 15 amps.
The theory is that you are not going to draw the full current load through 1 outlet. There are usually 6-8 outlets on 1-20 amp breaker.
You could have a problem if you drew more than 15 amps for a long period of time. The outlet will over heat and become brittle and crack causing a short.
The list of things you have pluged in does not look like heavy current drawing items.
To find out how much you are using add up the max. amps for every item (look at the name plate data).
If that is more than 80% of the rating of the outlet. You may need to make some changes(I would).
At the very least make sure your smoke detector has fresh batteries! 
Practice emergency evacuations from your house and keep a fire extinguisher handy.
These are a good idea anyway.
Kwatt