You're welcome. Glad to have helped.
Doctor, thank you. In a few sentences you provided 10x the information that I have received from my urologist. I had been researching CPPS and most recently read about how activities typical of my selfish activities can cause an incredible amount of anxiety with physical affects to the perneal area. Further, your answer concerning the immediate symptoms helps to eliminate that this self-imposed anxiety is anything but that. Adding in incredibly heavy weight lifting and my documented lack of flexibility (recently did PT for a strain) seem to all combine themselves to a predisposition to the prostatitis symptoms. It's really wonderful work that you all do. I've read alot out here and the non-judgemental nature of your answers is truly appreciated my so many of us. Again, thanks.
Welcome back to the forum.
Reacting first to the title of your question, before reading anything else: No STD can start to cause symptoms in under 24 hours. 2-3 days is the minimum, and for most STDs it's a week or more.
Now I have read the rest, and also glanced at your discussions on the STD community forum. Unfortunately, this forum really can't help you at this point. You have been repeatedly examined by well trained and competent health professionals, including a urologist who found nothing abnormal; multiple negative STD tests; and more than adequate treatment against any and all STDs that conceivably could be involved. In this circumstance, you should not expect to solve the problem by searching on line or asking questions on this or any other forum. Whether or not you had chlamydia at one time, at present you do not have that or any other STD.
The problem here is clearly either prostatitis or the chronic pelvic pain syndrome (CPPS), which sometimes are one in the same. Most prostatitis is not due to infection of any kind; although antibiotics often are tried, often they do not resolve the symptoms. In that circumstance, most men simply have to learn to live with their symptoms. Most men find that pretty easy to do, once they are convinced they have nothing that will ever harm them or their sex partners. This is probably where you are at this point, and I suspect this is the message intended by your urologist.
For more information, I suggest you google CPPS (spell it out) and/or "chronic prostatitis". An excellent Wikipedia article will be near the top of the google hit list; it's a good place to start.
Good luck-- HHH, MD