Symptoms of hypothyroidism are fatigue, depression,
weight gain, cold intolerance, dry, coarse hair and skin, constipation ,muscle cramps, decreased concentration, vague aches and pains, menstrual disorders, palpitation and swelling of the legs.
I feel that you should consult a physician and get yourself and your thyroid hormone levels evaluated.
Other than that get your estrogen, progesterone and FSH levels checked as hormonal imbalance in menopause can also cause such symptoms.