My Legs Are Killing Me , I Work As S

My legs are killing me , I work as s bartender and stand up 8 to 8.5 hours a day non stop no break . It seems the veins are breaking down . I just turned 41 and I am a single mom sole supporter of my 3 children . I need every penny so I don't want to complain at work but this is getting very painful even on my days off . What can I do ? Please inform me of medical options .
Thank you so much !
Kara