Hi, Welcome to Health care magic forum.
The hot flashes might be due to the deficiency of the
estrogen, H.R.T is discontinued due to some reason.
There might be some other reasons, for hot flashes,may be underlying feelings of deficiency of estrogen, deficiency of
vitamins,some chronic infections.
I advise you to consult a physician for diagnosis and treatment.
Take more of green leafy vegetables,pulses,sprouts,and protein rich foods to have blood,general health and resistance against infections.
Wishing for a quick and complete recovery. Thank you.