:(I have a 4 1/2 month old shepx. She has never piddled before, but in the last week or so piddles quite often. When we look for her she piddles, she piddles if she is excited to see me or my husband, and when she is excited to see someone. There are always people at our house. The day we brought her home there was a lot of people here. She has never piddled before. I don't understand what triggered this. How can I get her to stop?

If she is piddling when she is excited because someone has come home, I know it's tempting to say hello and be happy to see her but just ignore her.
It seems mean, but you can give her all the attention you want once you are in the house and she has settled down.
A lot of dogs do 'excited wees' and you need to break the cycle so that she doesn't get so excited and worked up when she sees someone.