Beilateral shoulder pain?

Many possibilities: Bilateral shoulder pain can be from many sources: tendonitis, instability, rheumatoid arthritis, frozen shoulder, referred pain from the cervical spine, etc. Less likely, it could be from a nonorthopedic condtion. If the pain is significant, then it's time to your see doc and move forward with some diagnostic and treatment options.

Bursitis.: At your age, it could be bursitis/tendinitis, especially if you are physically active.