welcome to health care magic. do not worry , your symptoms are those due to estrogen deficiency
which post menopausal women face often. you can use a lubricant jelly/estrogen containing gel for local application to relive the local itch. also do keep a regular routine of exercise ,some yoga
and breathing exercises along with adiet in soya products(which have phytoestrogens similar to natural estrogen). hope this is helpful to you.take care.