From your symptoms, I am assuming that you had AC power initially in your camper which includes your 110-VAC at your receptacles and to your microwave and other 110-VAC accessories???
If this was the case then you need to check several things;
First, check that you have 110-VAC at the input side of your breakers. Actually, use a multimeter for this, if you know how to check electricity safely, otherwise get a trained electrician to do this for you. Your house receptacle you are using could possibly not have power to it due to a kicked breaker in your house.
Second, if you are confident you have 110-VAC to your breaker box, then you should reset your GFCI receptacle to make sure it has power. If the GFCI resets properly then the other GFCI receptacles should have 110-VAC power.
For a couple of bucks, you can purchase a simple test plug that lights up if there is 110-VAC at your receptacles.