My rescue dog wont go to the bathroom

Question
I adopted a rescue dog 2 days ago.  It had been living in a rural setting with a foster family, with 5 other dogs.  They had a fenced back yard and just allowed the dogs to go in and out through a doggy door.  I live in an apartment in an urban area.  The first day I got him home (he's a 2-3 year old Beagle mix), he heard a loud noise, jerked out of his collar (I have since gotten a harness) and ran off into the woods adjacent to my apartment complex.  I finally caught up with him.  However, it has now been in excess of 48 hours and he has yet to do any bathroom business.  He has drank some water, but not eaten yet (I expected he may not eat right away).  It's possible he may have done his business while in the woods, but now when I go to leash him, he's very reluctant to go out, and so far no bathroom.  I spoke to the woman who brokered the adoption and she said this was normal, but how long should I let this go before it is considered a problem?  I was told he's house broken, and no indication he's wanted to go indoors.  I'm just concerned by his not going it may lead to a health issue.  So again, how long, beyond what is now 48 hours, can I expect him to go without at least urinating?

Answer
I would check your house to mamke sure he hasn't gone on the floors because even without water he should be wantin to go potty. Take things slow with him,he's been going from one home to another so he's goign to be a bit jittery for awhile. I would say if you know for a fact he isn't going and he hasn't gone by tomorrow morning make an appointment to get him checked out or talk to the people you got him from to see what his potty schedule is like. If he isn't eating try getting some canned food to feed him at first just to get something in him until he adjusts,you can mix it with dry food. But take him out to pee and give him plenty of time, keep things positive, talk to him in a happy voice and encourage him to go potty,don't rush him or it may make things worse.When you bring him in since he is not housebroke keep him on the leash and keep him close to you so you can keep an eye on him that way you can take him outside to finish right away if he starts going inside.