Or at least it feels a bit swollen but it could just be generally uncomfortable.
Nothing sexually transmitted unless it has a very long incubation period 
I'm 50, periods still regular, but menopause must be on the horizon.
Sudocrem fixes it in less than 24 hours but within a few days it's back. This has been happening, on and off for a year or more.
Nothing unusual to look at, no rash or similar.
Any ideas?