This is called Coprophagia, and can be caused by many things, but many experts say it's because they smell some undigested nutrient in the poop, and BethPurk, don't believe that the dog won't do it again, cat poop is especially appealing and many people find that they have to place the litter box in a place the dog can't reach or up high. Some people have found that placing a gate in front of the door helps because cats can jump over it and dogs can't. If the dog is eating his own poop there are several methods that might help. Unseasoned meat tenderizer has an ingredient in it that helps digest the protein when dog first processes it so poop won't seem nutritious to him. Pumpkin and pineapple are also said to work. In addition, there is an additive sold at pet stores that make poop taste awful, like doesn't taste bad enough already? Here's a link for more information:
Stopping Dogs From Eating Poop
For the pee pad problem, some people use more pee pads so that its hard for them to make a mistake. I suggest not allowing her to sleep in the bed this early, she won't pee where "she" sleeps, but this doesn't keep her from thinking the other side of the bed, is a whole other state. We kept a small kennel-like bed next to ours. It was small enough that Joey wasn't tempted to go in it. He usually cried one or two times a night, and I would place him on a pad in the bathroom and keep him on it until he peed, then he returned to his "crate." In the morning I took him outside because I wanted to train him both ways. After several months he graduated to our bed and I keep a pee-pad on the chest at the foot of the bed and he had no problem learning this. Then the pad was moved to the floor with steps of course, and later we moved it to a different room. This is a great link to house training:
Free House Training for Puppies and Adult Dogs - No More Accidents Starting Today!