I have heard many women complain of their cycles being off or heavier while lc-ing. Something to do with the way estrogen is stored in fat and while in ketosis larger amounts are released. The good thing is though, in most cases, over time the symptoms subside and your body will equalize itself again.

As for getting back into ketosis, most bodies can only store enough glucose for 2-3 days, once past that you should enter into ketosis again.
Welcome to the forum and good luck to you!