Hi, based on history of standing long hours and description, this suggests that you are suffering from varicose veins
. You need to get examined by your surgeon once to see the competency of blood vessels and based on that further treatment can be planned.
For now use tight bandage/crepe bandage from mid foot to low thigh region to prevent any other problem, keep your legs at raised position when ever taking rest and reduce standing for long hours. This will help you. Consult your doctor once for planning further management.