The number is different for different states but I think 6 weeks is right at the federal limit that is allowable maximum. I had this same problem. I would buy the COBRA to be absolutely sure as these insurance companies can come up with some real hum dingers. Some states allow insurance to declare a preexisting condition on the transfer after only a few weeks of non-coverage.

I would definitely check with your state insurance commissioner or a good independent agent before going uncovered.