Answer:
Weight in my belly, trees on my back, nails in my ribs, feet I do lack. What am I?
I think you live beneath a roof that is upheld by me; I think you seldom walk abroad but my fair form you see; I close you in on every side you very dwelling pave and probably I'll go with you At last into the grave.
What has no beginning, end, or middle?
Lovely and round, I shine with pale light, Grown in the darkness, a lady’s delight.
I went into the woods and got it. I sat down to seek it. I brought it home with me because I couldn’t find it. What is it?
No matter how little or how much you use me, you change me every month.