Re: your foot. I had that happen. I stood up and suddenly had severe pain. (I had walked a longer distance than usual earlier in the day.) The pain was so severe. I thought I had broken my foot. I went to Ortho. They ordered Xrays. They could see quite a bit without an MRI. I have plantars fasciitis, which surprised me, as I had it before and it was not as severe as this time. My chiro also adjusts the bones in my feet. My feet do better, overall , when she does this. Sometimes, when my feet are really bad, she does massage on them, which really helps.

For PF, I was put in a night splint, had special orthotics prescribed, was given exercises and more. I was able to bypass spending the time and the money on PT and am getting better. My chiro helps me out if I have questions/issues in the meantime.
I know you are in pain. I hope it is something simple!