Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
The stretch injury
may take time to heal. You just have to wait until the same heals. It may take some 2-3 weeks time. Until then try not stretching the same area. You need to rest the part to help it heal.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you. You just need to contact me on this below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.