At least it felt like a pop. Like you, did not have an MRI. Doc listened, examined, and prescribed PT and insoles. I think it took close to 6 weeks before I could walk at a normal pace without symptoms; running or even jogging were out of the question for a couple more months.
Get committed to that PT. Don't skimp. (Mine was similar to the link - YRMV).
The first pair of insoles I had were half-soles that didn't stay in place and were worthless. Superfeet Blue Insoles remedied that issue.
I had a relapse of sorts, although not as severe, ~14 mos after the initial incident. Wasn't using any inserts at the time. Got back on the PT, recovered, and have used the Superfeet inserts ever since. Been symptom-free for 5+ years. Good luck.
from tearing mine, to be honest my plantar fasciitis has been a constant issue since. Orthotics were a lifesaver for me, and are to this day. The body will take it's time healing though!