My son had this last year as a 14 yo and went for a month without throwing, and 6 weeks without pitching. He was rehabbing it diligently with tubing and other exercises designed to strengthen the back and decelerator muscles. He went on to throw a no-hitter in the state playoffs and was hitting 80 on the Jugs.
Moral of the story: rehab diligently and take your time getting back on the mound. Taking it too fast can cause long term problems.
Work with your doc and physical therapist, and good luck!