Ed
Great to hear you are starting your CrossFit Journey.

Are you new to training or had a break in training?
Were your workouts short in duration with a high intensity?
This may be a new stressor on your body.

Believe the medical term for it is Exercised Induced Interstitial Pulmonary Edema.
How were your symptoms 30:00 following the workout?
It can take 12-24 hours to resolve the symptoms.

Something to be aware of.
It is not something which should be happening on back to back days, or often.
Yes, there are varying degrees of this, however, it is not normal to be occurring.