Hello,
Welcome to ehealthforum and thanks for writing
You seem to be suffering from post menopausal symptoms and hot flashes is a quite common symptom.It is due to sudden decline in the hormones as compared to the reproductive cycle.
Some changes you can do as:
1)Herbal teas as black cohosh helps in combating hot flashes.
2)Do some form of exercise daily even a daily walk is fine.
3)Have low fat diet and opt for fresh fruits,veggies,salads etc.
4)Avoid smoking,alcohol and excess caffeine use.
These days medications as C ionodine are available which is prescribed for hot flashes.Kindly visit a Gynaecologist and discuss regarding its use.
Take care!