Just to clarify - is not a 'spot' on the rim - meant to say a 1cm area size area
Herpes symptoms don't appear for at least 2 days. This spot that is sensitive is likely just irritation.
While condoms don't offer 100% protection against herpes, they do offer significant protection against it.
If the soreness lingers, or any blisters/sores appear, see your doctor. If you get a sore or blister, see your doctor within 48 hours of it appearing to get it cultured.