[surferjoe2007]

Yes, it's common to fluctuate throughout your cycle.  Take measurements and/or pics so you can see your progress, and keep track of when the measurement/pic was in relation to your cycle.  Once a week is good for example, to get 4 places in your cycle.  Plus you should expect gradual results.  If you did what I suggested it's pretty mild (but also very low chance of any issues) so it might take 2-4 months to get 1-2 cup sizes.  So it might be as little as 1/4 inch a month, though possibly more.  And you may not be able to see this easily if you aren't measuring and/or taking pics.  Especially compared to the ups and downs of your cycle.