Downsizing to the Half and could you stop pressing on my knee?!

I bit the bullet. After reading an email from the RD about the 6 hour marathon cut off time, I decided to downgrade my race to the half marathon. Sigh. While I disagree that "if you cannot finish the marathon within 6 hours you are physically unready for the distance," (as they put it), I can't help but respect the rules. Also, I didn't train through this summer heat to not get a medal.
I'm okay with running less, it means I won't be in a world of pain the next day. I now need to work on finishing the half under 2:45. Last year was a gong show of a half marathon so this year I'm determined to get it done in a respectable time frame.
All that said, these past 2 weeks have sucked for my knee. The swelling that was kept at bay by the Naproxen returned really fast so now it feels like there is constant pressure on top of my knee (as if someone is pressing down on it), that I may have developed a slightly migrating form of shin splints and a nasty muscle knot on top of my thigh that even my most torture-looking of rolling sticks can't beat out. Really, that stick is freaking scary with all the pointed knobs. Ugh. I could take the Naproxen again but honestly, it made me so nauseous that I almost prefer the occasional Tylenol. And, as usual, I have no time to sit around my doctor's office, a 2 hour trip most times. Who has 2 hours in the middle of the day?! I have no sick time left and only a few sparse personal hours so I'd rather use those for an actual emergency, not chronic pain and swelling. Last night I had such a bad case of movie-goers knee that I was hobbling around like a 90 year old. Still, not an emergency. Pathetic, yes, but not an emergency.
Despite all that I continue to run. I did take some days off last weekend but it honestly makes things even worse. It's like the swelling has a chance to settle, so running keeps everything moving. I guess, I think. That's what you get when your doctor says there's nothing else that can be done. Lots of guessing.
So I'm not sure what to try from here. Thankfully most physio clinics and my chiropractor work after work hours (yay), so I have options. I just don't know which one to try since I'm not really sure who could fix the problem.