What Causes Pus At The Corner Of My Toe After Applying Acrylic?

Hi, Last summer my big toe nail ripped off, i let it grow about half way back out and then got acrylic on it (done this multiple times before). I had a cut on my toe and now the corner of my toe is has a little puss on it. My toe isn’t swollen , discolored or sore. What could be the problem?