It can't "go bad" just because you've left it in a secondary...it can go bad if it gets infected. But a beer can get infective whether it's one day in primary, or months in a secondary, it has nothign to do with the time in a vessel.
A secondary is traditonally used to bulk age beer and wines, so their supposed to be in there for a long time. I have a barleywine in secondary for a year, since it's not going to be drunk for 4 more years, till I turn 50, I'm really in no hurry to bottle it.
Your beer is going to ba amazingly clear and tasty when you are ready to drink it.