What Causes Severe Pain In The Hips And Knees At Night?

I have pain in my hips, knees and they come mostly at night. Sometimes it feels like it is in the bone below my knee. My right leg is the one I have most of the problems. It isn t every night, but is quite often especially if I have been on my feet a lot during the day. We just moved to a home with hardwood and tile floors, and spending a lot of time moving in the last two weeks. Have also had some back pain, but is better when I sit down. Walking very much really tires my legs out.