My goodness. it has been more than a year and a half since your exposure. At this time you should have no lingering concerns about STDs. I will do my best to relieve you concerns. In doing so, I expect that I will be repeating much of what you have already heard from your doctor.
In considering syphilis, let me first re-affirm what your doctor ahs said. Syphilis IS rare among STDs and is transmitted by direct lesion contact. In you did not see a sore on the CSW's mouth at the time of your exposure, you have little to worry about. Getting syphilis is very, very rare. Now, let's work through your questions:
1. Syphilis sores (chancres) are typically quite obvious and are painless. The sores you describe sound far more like trauma from masturbation.
2. They can be any site of exposure. Thus chancres can appear on the head of the penis or the foreskin. When they do, they are typically quite obvious.
3. Syphilis is only transmitted in the primary or secondary stages, when lesions are present. When lesions are not present, persons with syphilis are not infectious to others.
4. Yes, most people do get a chancre, then the rash
5. Yes
6. I have seen it but I have seen more syphilis than 99.9% of physicians. Oral syphilis is very, very rare.
Bottom line. the chance you got syphilis from the exposure you mention is miniscule. On the other hand, it it is still on your mind, I would recommend that you go get a syphilis blood test, committing before you do to believe in the negative result I am confident you will get. EWH
You mention that a person is infectious when they have primary or secondary infection..what is the time frame on this??...and with secondary is this when a person has a rash do they also have sores during this phase?..
This will be my final question so I will thank you now..thank for your service
Would a CBC show something was wrong if one was infected with syphilis?
In secondary syphilis a rash it often present. ABout 15-20% of persons with secondary syphilis also have chancres present at he time they are diagnosed. Secondary syphilis typically resolves about 6 months following acquistion of infection.
I will take you at your word that these were your last questions. If you have continuing concerns (which in my mind are not justified), then I would suggest you just get tested. No more answers from here however. EWH