No offense intended, but...
Sorry dude, but "digestive enzymes" are trash. At least the ones that you would take orally and not need a Rx for. Additionally most enzymes simply cannot be absorbed via the gut.
A great example is insulin. Ever wonder why diabetics that require insulin need to take a needle (and yes i am aware that they are now nasal sprays, and inhalers...but remember these do not go through the gut, it is a different type of absorbtion), because the gut destroys insulin (which is basically, a type of enzyme), it needs to be given Sub Q or IV.
And again, the chance that you are actually buying "digestive enzymes" over the counter...and what you are actually buying is what the label says it is...or actually works...let us just say that the odds are not in your favor!
Regarding the situation you mentioned above, there are numerous other factors that could have come into play that could/would explain your ability to now be able to better tolerate the protien...all of which do not require OTC "digestive enzymes"