By all means look into getting a handicap parking card, even if it's only for now. and you can say to that "lady" and the "security" that you are handicapped.

my mom had one for a few years but then her vision improved a bit so she didn't renew it- but dad has a bad back & PD so at some point they will get one again.

most people are helpful , but always some lemons in the bunch.

Do you have a med for break thru pain?