You can get nerve damage from bike seats. Make a change in the seat at least.
hiya hun, it could be a number of things, all of which can be sorted by your gp, ingrowing hair (they don't always hurt) a cyst (easily removed) varicose vain in that area could also be a possibility but I would assume that might hurt. best to go see your gp (make time, health is more important that cycling hun, in the long run any how) as it could be so many things.
good luck getting it sorted :)