Minor sports injuries often respond well to self care measures, usually referred to as PRICE for ease of remembering:

• Protect the area from further injury, perhaps by immobilising it
• Rest by cutting out exercise and minimising daily activities that involve the affected area as much as possible (for example, not walking with an injured knee). Supportive measures such as crutches or a sling may be helpful
• Ice the area for 15-20 minutes every two to three hours, avoiding ice burns by wrapping ice packs in cloth so the skin isn’t touched directly
• Compress the area with bandages to limit swelling
• Elevate the injured area above the level of the heart if possible to reduce blood flow and minimise swelling. Following these steps for a couple of days is usually enough to resolve many injuries.