I've tried just about every plantar fasciitis shoe and ortho

I've tried just about every plantar fasciitis shoe and orthotic, including custom, and still, the only shoe I could stand all day in was a pair of cheap, bright blue foam slides I had in the 90s. I do not have any pain in the morning. Wondering if it's actually even PF. I'm on my feet all day for work, and it's awful by the end of the day. Heel pain around the back, sides and bottom. Feels so good to just squeeze my heels after a shift.