No bowel movement in 11 days

[easkone]

I'm a new ball python owner, I got it Sunday the 5th from a women who wanted it out of her house since her so left it was his snake. It was neglected for a while there was shedding and a couple movements in the 20gal but I got no info from her other than it needed to eat and liked live food. So I brought it home cleaned the aquarium bought a large mouse because I wasn't sure if it would eat from the stress but I wanted to offer something. I fed the snake 24 hrs later on Monday and it was right on it. Tuesday I moved it to a bigger 40 gal terrarium because I thought the 20 gal was a lil small. I put in the hides, water bowl, and artifical plants in that I got with him in the 20 gal. He seemed comfortable and I figured he was still hungry (being a bigger snake and only eating a mouse). So on Wednesday I fed him a soft fur rat. A week passed he seems to drink regularly and everything and I fed him another soft fur. He seems to be eating very well but no poop yet. I noticed his eyes bluing last night so could him starting to shed have something to do with this? He may have also swollowed a small wood chip during the week but I didn't think this was a huge problem because they digest whole rats. I also heard they take a lil longer to digest soft furs but I fed him a mouse first. Can anyone give me some advice?