How to recover fast from leg kicks?

There was a new guy came to our gym,and coach made us working on our combinations and techniques. I paired with him because of our weight and height were similar. He was kicking my thighs with 100% and I told him to go easy multiple times but I think he wanted to show himself to the coach.

4 days has been past and I cannot bend my leg and I cannot walk properly. I missed sparring due to my injury. How do I recover from leg kicks and get back on training fastly?