Knees Pain For Running

I am having pain on my knees again and I am pissed because it might be a perefect weather to run tomorrow. But I will try my best to run even if I am having knees pain.

I don't know what is causing this knees pain. I think it's because I stop taking glucosamine and drink less water since Friday. Ahhhhhh!!! I want to run!!! I need to run!!! I need to lose more weight before summer and this pain won't stop me from being as active as I can.