This is normal and you might not be constipated. The colon holds waste up to 36 hours since a previous meal. Since you completely emptied your colon for an exam it's going to take a few days to get it filled again.
I didn't go for 3 WEEKS after my scope. And it was 3 WEEKs before the scope...I was so glad for the prep! I think I was so inflamed that nothing would come out...only blood and mucus. The last two days I am finally going. Not normal but at least its poo!. The blood and mucus is down also...not gone tho. And the bathroom trips are at 3-4 times a day. I told my dr. that I hadn't gone in almost 3 weeks...(last time I saw him) and he didn't seem to concerned. I did the miralax...no results...I did a fleet enema at the two week mark...some results but not nearly two weeks worth. I intend to question him more on this subject when I see him Wednesday!! Did you call your dr and what did he say?