Doesn't sound fatal, but you can visit an STD clinic free of charge and have it properly checked out - Sexual Health, Safe Sex, STD / STI, GUM Clinic Info for Sex Workers, Escorts in Ireland and Irish Escort Clients - Escort Ireland

This is the only sensible thing to do. I know you may not fancy a trip to your local STD clinic, many of us don't relish this prospect, but it is never as bad as you think it will be and you'll feel loads better once you've had it properly looked at.