Need advice about possible symptoms that i may be experiencing

I had a very brief encounter about 2.5 months ago, maybe seconds of unprotected contact. A few days later i felt an uncomfortable sensation and a small red area on the area that i feel that there was contact. I've been seen by multiple people and they all say that they wouldn't be too worried. My problem is that this area of redness isn't going away. There are no open sores or anything that looks like a blister or lesion. just redness. I have had this tingling in my thighs and soreness in my legs, I've also been working alot and standing on my feet all day. I was wondering if anyone has had any experience with a mild exposure and if it sound like i could have contracted something from seconds of contact. I have been terrified for the past 2.5 months. Nothing is getting worse but at the same time no better. Any wise words would be appreciated.