Hello,
Yes,it's a matter of concern. You have injury to your ACL ligament .It won't repair on it's own. Depending on MRI the surgeon will decide the take on surgery.
Till then keep icing to reduce swelling to some extend and were a knee brace to prevent further injury due to hyperextension.
Hope for speedy recovery
Next Steps
meet a surgeon a go for MRI
Health Tips
physiotherapy post treatment will help in easy return to sports