Another +1 to UK NHS service. I had the worst case of Gonorrhea and I couldn't walk the pain was so bad. The time I arrived at the A&E up until the moment of release (which was the next day after having to stay overnight), I was taken care of quite well. Doubt I would have received that standard of care back here in the US. Although I was living in SW London where basically every stop along the tube has a GUM clinic nearby
And yes, please test regularly! I contracted syph a few months ago. Those penicillin shots right in the ass hurt like a mofo.