Side knee pain

Hiya! My name is Melly and I’m fairly new to running but recently have been dealing with on and off side of the knee pain. It feels like when you bite into an ice cream and not expecting the coldness to hit your teeth LOL-a quick rush. It hurts to extend the knee and put pressure on it, like going up stairs.

During the winter, I ran on the treadmill and had no issue UNTIL I started running outside. I’ve been rolling and using compression boots every time it flares up but, still can’t find any relief other than resting. Any advice will be greatly appreciated <3