That is common. My periods got worse before they got better too. The drug is fighting to regulate everything and getting it all under control is harder then we think.
To give you an idea, this is what my cycles looked like on Met my first year. I started the drug at the beginning of August '01. My first Af was Oct 10 (that's about a 63 day cycle).
Subsequent AF's: Nov 25 (46 day cycle)
Dec 26 (32 days)
Feb 28 '02 (64 days)
April 8 (39 days)
May 10 (31 days)
July 14 (63 days)
Aug 17 (33 days)
So you can see, my first year was far from normal. I know now that a big part of the reason was that I hadn't altered my diet yet. By low carbing, I can keep my insulin spikes down and I give the met less insulin to fight against. I think that is partly why I was so irregular the first year. I have also cranked up my exercise, and I have been 31-34 days every month since July of 2002. Diet and exercise have really helped.
So, take heart. That irregularity is not uncommon, and you can help it by making even little changes to your life.
Good luck! 
__________________
Christy
33 yrs, 1 precious hubby, 2 miracle kids, At Goal Wt for 4 yrs, Trygly's down 445 pts, Free Androgen down from 20 to 2, 3 half 'thons ran, 2 mtns hiked, 1 crazy run in the Rockies, 4 forest trail races, profiled in 2 magazines...1 woman determined to kick PCOS butt!
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Before & Aug 2007
'08: Duathlon and another half? | 
