Today, like a bunch of other seemingly random days, I got a pain when I wiped myself after using the restroom. Upon further inspection, I found what feels like a decent sized ball in my labia major(outer vaginal lips) that squishes slightly when squeezed gently. This has been the result every time it happens, though the size is never constant. I am currently unable to afford seeing a doctor, and its not something that constantly bothers me when it's there, but I am worried about what it could possibly be. Any thoughts?