Why do you think you caramelized the priming sugar? I mean think? It should have been obvious one way or the other. Still, unless it was carbonized it will only add a little flavor to a 5 gallon batch and should not ruin it.
As far as off flavors, honestly, you are asking too soon. Back when I used to routinely try my beers before three or four weeks had passed I usually hated the taste. There was usually some off flavor that predominated and then it would worry me for one or two more weeks until the beer was actually done conditioning and the beer would taste delicious.
Some of the worst tasting beer I have ever tasted was under conditioned beer that had only been in bottle for 2 weeks. This same beer has often gone on to be the best beer ever one scant week later.
On Tap: 1. Kelly R. IPA, 2. Roter Hund Hefeweizen, 3. Bud Killer Blonde, 4. Red Dog Pale, 5. Roter Hund Oktoberfest, 6. Pumpkin Ale, 7. McRed's Stout (with new nitro system and stout tap,) Cream Soda, 8. ESB # 3, & 9. Ordinary Bitter.