Spike,
I'm sorry to read about your flare up and pain. Even minor surgery can be worrisome for us. My first thoughts are to start taking Vit C 500mg daily. Depending on what you had done you might want to keep that up for a month. If you have Lidoderm patches or topicals I'd put those both on your foot AND close to your procedure area if it's possible.
If they gave you anything to take for pain be sure to stay on top of it. Even if you are wanting to avoid extra meds it's better to keep pain control steady than try to address it once it's out of control. If you have anything to take for occasional sleep problems that may good to make sure you rest.
Oral steroids may be quite helpful at this juncture too. My PM gave me a script to take with me for travel and such in case I flared badly. They are effective for knocking the response down so it's worth asking about.
And NO PIZZA!

Be good and avoid those flare foods.
I hope your pain decreases soon and you heal quickly and completely.