Just the standard advice, RICE: Rest, Ice, Compression, Elevation. Rest the injury. Cut back or stop running for a while, at least a few days. Ice. Ice is good. What are you trying to do with heat? It isn't a muscle injury, so I see no benefit in heating it. Maybe someone else will have a different opinion. Compression. If you're going to run, consider wrapping the knee, to keep the patella in place and reduce swelling. Elevate your feet. Let the blood run out of your legs as much as you can to reduce swelling and inflammation. You might also consider Ibuprofen. Inflammation is the enemy. Start your tapering with this steep drop off. When you can run without pain, don't push it. You can't train yourself into a better marathon at this point. You may as well do whatever you can not to injure yourself any worse. But this is all just my opinion, and I'm not that good at this marathoning thing. Good luck.

thank you!!! Went to the doc today I see what a week can do I just want to run my race!!!!! all the miles and now side lined WISH ME LUCK