How can i know if my back is ok?

a couple of days before i did a full workout routine from the website madbarz that worked mostly on core/abs whatever and i wanted to finish the last routine i kinda hurried without rest between workouts and i did crunches fast

after about 2 hours i started feeling pain while breathing deeply and i realised my middle back got a little outside not like how it used 2 be before it

and even though about 2 days the pain was gone but every deep breath made a click sound in my back

now even though its been a week im afraid to work out again

ive made a quene to the doctor but im still afraid if maybe itl make a long time injury