Take the pill for a month to reset my system?

[megankgr.livejournal.com]

I'm going to try and keep this short. I got my paragard iud inserted in November and it was all fine and dandy, but I've been spotting on and off (mostly on) for the past 2 months with no real period. I've taken 4 preg tests and they were all negative. I have a spare pack of yaz left over from before I got my paragard. Would it be a good idea/effective to take that for a month to reset my system? This spotting is really getting tiresome. Anybody ever do something similar with any success?