I had athlete's foot and it was horrible. It felt like they were on fire and stunk to high heaven. Fortunately some pharmacy grease got me back on the right track but it went on for multiple months. I'm not a doctor person so I never went but II should have gotten some prescribed medication.
I have plantar fasciitis and if it wasn't for my visit to a podiatrist, I would have never known, plus I would have never got those much needed cortisone shots that helped me out big time. To go from feeling like I was walking on nails to make it feel like a pillow was amazing.
Of course the individual nail I actually stepped on is a different story but it's all the same thing. Don't be a dick like me and trust your doctors if something isn't quite right.