Exercise and spotting

First off I have an appointment booked with my doctor, but am looking for real life experiences to whether this is normal or not.
This year I have decided finally it’s time to get fit and healthy. I go jogging when I can and attend exercise classes in the park.
I have found after a jog where I’ve really pushed myself, I start spotting. Is this normal?
Before children I used to regularly attend the gym and go running, and don’t recall any post exercise spotting when I used to really push myself