Re: shorter menstrual cycles

Thyroid hormones could also alter your menstrual cycle. Other symptoms of thyroid hormones could include:

brittle nails, dry skin/hair, feeling tired, feeling anxious, feeling cranky, low sex drive, heat or cold intolerance, increased or decreased appetite / weight gain, trembling hands, etc. It is easy to diagnose with a blood test.

good luck! that sounds very inconvenient