Fat people problems

Ok so I’m pretty over weight. I weigh 260 lbs and I’m 5’7”. I have generally felt pretty healthy, up until recently I have started having foot pain. I’m pretty sure it’s planter fasciitis, although I have not been to a doctor. It’s just a very sharp pain in the bottom of my heel when I put weight on it, accompanied by a dull ache when it’s resting. I’m constantly standing and walking with my job and live a fairly active lifestyle, so this is becoming a huge issue. Aside from trying to lose weight, does anyone have a solution to at least make it bearable for now? Also looking for tips on how to lose weight quickly.