Has anyone ever given a consultation in Seoul where they only spoke English?

Hey ladies, I'm going to Seoul for some treatments soon, but I'm worried about communication. I speak English normally, but I don't know if the clinics there understand English well, or if they require a translator for more thorough consultations. I'm planning to look for well-known clinics, but I'm afraid I might miss important details if I speak vaguely.

Has anyone ever had a consultation in Seoul and managed to get a complete understanding just by speaking English? Or should I prepare a translator? I'm also unsure where to find one, how expensive it is, and I'm afraid of discussing private matters with strangers. I'm a little anxious because this is my first time, so if anyone has experience, please share it with me!