Well my 2 year old has been potty-trained for about 3 weeks... using the restroom and having no accidents. Well we moved into a new house on Wednesday and all day yesterday she kept going in her pants. Today... she used the toilet twice... but just now she peed all over the floor again... am I expecting too much of her? I mean for the past 3 weeks she would tell us she needed the potty no problem... even the first 2 days we were in this house. But now it's a different story she just goes. I heard it could be the stress of moving to a new house but how long does that last? Any advice?

The move could have thrown her and she is regressing. That is normal. I started training my daughter at 2. The first week she did fantastic. No accidents. After that first week, she totally stopped using the toilet. So, we didn't push it. We figured she just wasn't ready. We laid off for about 6 months. When she let us know she was ready, we tried again. At 2 1/2 she was trained.
I wouldn't worry about it. The stress of the move could be why she is regressing or she may not be ready. Potty training, in my opinion, is done on the child's timeline - not ours. It is one of those things that can't be forced. Just don't stress and let her let you know when she ready.

Good Luck.