Re-training my pet Yorkie

Question
A little over two weeks ago, a co-worker from my mother's job gave us her 1 1/2 pet Yorkie Terrier, Peanut.  She told us that he is fully trained to go on the wee-wee pad and outside.  On the first few days Peanut stayed with us,  he alerted us when he had to go outside.  There were a few times when he never alerted us and just went on the floor.  Now Peanut alerts us all the time when he has to go outside.
      For about a week now, in the middle of the night, Peanut will whine until I take him out to the bathroom.  There are two wee-wee pads set down for peanut (they were placed in the spots where he went the most, but he never goes on them.  We've put the spray on the pads, even some of his own urine.  Instead of going on the pad, Peanut will lay down on them.  Is there anyway to retrain him to go on the wee-wee pad?
       I also have another problem with him.  For a little over a week now, Peanut has been constantly whining to me and no one else in my family.  He whines when I close my bedroom door to go to sleep, so I keep it open for him (his previous owner said that she allowed Peanut to sleep in her bed at night).  He whines at me whenever I'm at the computer, and he whines whenever I'm doing my homework or studying.  Is there any way I can make Peanut stop whining.  When ever he whines, I'll see if he's hungry, thirsty, wants to play, or wants to walk.  Usually, those aren't the case.  Is there anyway to make him stop whining.  If there is, would that be a solution for me to keep him out of my room at night so I can sleep?  Is there also a way to make Peanut go on his wee-wee pad, instead of always coming to me to take him outside?

Answer
Hi Shanelle;
Sounds like Peanut has separation anxiety from his previous owner.
It sounds like they were very close,or at least HE was close to her, and then she gave him up.
That was quite a shock and rejection to him, and will take some time for him to adjust to it.
He is probably being so close to you, so you won't abandon him, like she did.
He is waking you to take him out, because he wants the closeness, and is trying to bond with you, also, maybe she put down the pee pads, but criticized him for going on them, sort of, "I HAVE to put them down or hhe will pee on the floor" and he sensed she resented it, so he is going to be more pleasing to you.
My girl friends Yorkie does all that to her when she is reading, on the computer etc, because she pays attention to him when SHE wants him.
I love him, and he knows it, so when I keep him for days when she travels, he sits at my feet while I am on the computer etc, and he just snuggles up to my back and sleeps. He goes out the doggy door by himself.
If you have access to a fenced yard where a doggy door can open out to it, so he can gio and come as he needs to, it will save you a lot of steps.
I think he is just wanting assurance that you love him.
If the person who had him could give him away, the he isn't loved like I love my dogs.
Once one is mine, I am no more giving it away than I would have given one of my children away.
Too many people care for their children and pets for what they get FROM them, and don't really LOVE them.
Yorkies are very affectionate little dogs, and I suspect he loved her more than she loved him, and he is NOT going to make the same mistakes with you, he made with her.
In that short a time, he cannot be sure yet, that he won't ba shifted around again.
Charlotte