Possible mild AC sprain/impingement?
No prior accident, only weighlifting in the weight I've been doing for weeks. Haven't gone to the doctor yet, and the mild pain only happens when I hold my arm forward with weight. Otherwise I have a complete mobility with my arm and shoulder. I did rehab workouts in the gym earlier, deloaded to 30-40% of my usual, and I felt no pain aside from dull discomfort when doing lat pulldowns.
Should I continue rehab works and gradually increasing weight as long as it's painless?
Edit: Pain is on top if my shoulder.