4-6 here, too.
Had my first lifting injury. Noticed a sharp pain in my elbow when fully extending my arm. Thought it was the normal pain the next day, but it was a lot sharper than usual and my workout wasn't that heavy. Any tips on how to work around it/prevent this sort of thing in the future?
Where is the pain? Inside or outside of elbow (tennis or golfers elbow)? What kind of exercise or grip?
If its some type of bone injury - stop everything. Or its tennis elbow - the elbow isn't your problem, its your forearms.
As you grip things, pull, push, etc - your forearms are doing a lot of work building up a lot of scar tissue causing you to LOSE elasticity in forearm muscle. Muscles lose elasticity, puts greater stress on connective tissue in the elbow, causing tendon injuries.
Pull your arms towards you like a curl, make a fist and curl your wrist inwards to stretch the outside of your forearm to help with tennis elbow.
Extend your arm outward, palm up and bend your wrist backward to stretch your inside forearm to help with golfers elbow.
STRETCH YOUR FOREARMS EVERY DAY. I do while driving, eating, watching TV, etc. I have absolutely crippling tennis elbow in my left arm - I learned the above about elasticity, started stretching every day, no issues since. None. Keep your muscles loose and it will stretch as it needs removing stress from connective tissue.