I had 4 months of no period after my dosage was adjusted from 112 to 125 mcg a few months after
the surgery, then my cycle
came back to normal (or, as normal as it has been since then). Then, for some unexplained reason, this past fall, I had 3 periods in November, 2 in December, then more or less back on schedule since then. My endo checked my thyroid levels as well as FSH,LH, Estradoil, etc.