shoulder feels tight

While close-grip benching yesterday I could feel tightness in my right shoulder. Just noticeable enough to make me think it is not yet time to start heavy benching again. During dips there was the same tightness near the bottom of the movement. Feels OK today though. Stretching has helped. For the past few weeks I've been diligent about stretching out my back and shoulder before work outs and throughout the day. After lifting arms yesterday I did some bent-over dumbell laterals to pull back my shoulders. Felt good. This is maybe an exercise I should integrate into my routine permanently.