Hi there Vanessa,

It is really important that you see a doctor soon to get some antibiotic for the infection as it can become a huge problem on a CRPS foot.
Even without CRPS we must never try to deal with our own ingrown toenails as whilst it may appear that you have cut the nail from the skin there is nail left under the nail bed at the side and this will invariably get infected.
A good podiatrist should always cut the nails of someone with CRPS as they are usually in such awful condition we can make a real mess of them.
As rsdmom says a good soaking will help and perhaps the application of some Betadine but seeing as there is already pus there you do need either local or oral antibiotics.
Hope you are better soon
Tayla