Possible finger fungus? I'm not sure!

My left ring finger started swelling up about a week or two ago and getting very red. I ignored it and figured that I had just hit it on something by accident.  The swelling did not go away and neither did the redness. I also found that my finger was very hot, temperature wise. The rest of my fingers would be cold or normal temperature, and the ring finger would be burning hot! I'm so confused. Another thing that just started two days ago is a very light greenish color that appeared right by the cuticle, a little bit upwards. I don't know if this is finger fungus! Please someone get back to me! I've been putting this cream on it day by day but it hasn't done anything so far. The finger also hurts very much when I touch it.
PLEASE HELP!

[uniqueflower]

Have you found anything? I have it to OOOOOOOOOOOOOOOWWWWWWWWWWWWW