Don't sound odd to me .. Mine is generally after the second meal of the day (high protien) .. One movement a day is normal .. Sometimes a second one of you eat frequently ..
More importantly is what the actual stool is like .. Constantly loose or runny is something to pay attention to .. I have always been told that sinkers are better than floaters but given my diet I don't pay alot of attention to that ..
Dehydration makes it a bit painful to get out .. There is a thread on that someplace ...
If its a consistent and a "normal" stool I wouldn't worry .. But the doc would be the final word if your really worried