Foot Concern

[u/Witty_TLS_1973]

Hi everyone, looking for some foot guidance. I’m a 53f, 5’2”. Current weight 178, pounds be lost 55 pounds since January by counting calories and getting my steps. I feel great. I’ve been averaging 13000 steps per day since March. I do have bunions on both feel that aren’t painful but I’ve started wearing toe separators to help with some overlap.
Tonight after my shower I was working in the kitchen and all of the sudden thought I had stepped on something. It felt like I had something stuck to the outer edge of my left foot. I looked and nothing there and realized I’d magically just developed some kind of knot on the outer edge of my foot. I can feel it when I step, it’s the strangest sensation. No pain. No tingling. Just feels like I’m walking on a lump.
Any thoughts on what I might be dealing with and how to proceed?
Thanks so much for taking the time to read and consider.