Managing Pain in a Physically Demanding Retail Job

If they won't help, maybe sit in the bathroom for about 5-8 mins for as many "bathroom breaks" you can get. Just put a bunch of toilet paper down or seat covers

I used to sit for 15-20 mins every hour or less if I needed to. If you can talk to a manager about it, they might be willing to help you out. Maybe put a chair at the register. They weren't very understanding but I was undeniably in pain because I was passing out and I had a doctor's note.