what are the symptoms of low estrogen?
['painful sex due to a lack of vaginal lubrication.', 'an increase in urinary tract infections (UTIs) due to a thinning of the urethra.', 'irregular or absent periods.', 'mood swings.', 'hot flashes.', 'breast tenderness.', 'headaches or accentuation of pre-existing migraines.', 'depression.']