Has anyone ever had Plantar Faciitis?

I’ve been working out every day for a few weeks. I also work a job where I’m on my feet for 8 hours. I wore a pedometer once and saw I walked 5 miles in an 8 hour shift and never wore it again. I’d never been so tired in my life. Anyway, the bottom of my left foot has been killing me. Like when I wake up I can’t put any weight on it at all. I went to the doctor and he called it Plantar Faciitis. The big ligament in the bottom of my foot kinda shortened up and when I walk on it it’s making small tears in it. There is nothing really to do for it but stretching exercises and ibuprofen. They put me on crutches for a few days, but I am not using them too much. Has anyone ever had this problem? How did you deal with it? How long did it last? I heard it could go on a while. I have still been working out and I don’t really plan to quit.