Go see a doc, get imaging done.
Not sure how easy it is to get an MRI in Canada, but I had to push to get my knee done.
Doc thought it was just an MCL sprain and sent me straight to PT. PT sent me back saying they want to see if there's a meniscus tear before they treat.
Had to go back to the primary care doc and oversell my injury a little bit ('hurts to walk', 'it wobbles when i put weight on it', etc) for them to clear an MRI
Turns out there was a meniscus tear and it changed how we approached the rehab process.
US healthcare system is a joke