Are long cycles after getting off b/c normal?

yes, long or short or heavy or light. nothing will be "normal" for a while

This is my second month of no pills, first month went like clock work. I'm now 6 days "late" according to my last cycle. How long to wait until see doc about problem? OTC test says negative this morning.

Your body may be taking extra time finding its own schedule now that you have come off the pill. It can take a bit and it may also depend a bit on how regular you were before the pill. Also, most women are most fertile when coming off the pill, the body is a bit out of whack from the hormones and such. Give it a little time unless you are having any other problems.