I'm currently on day 11 after 2 shots of penicillin and 2-a-day doxycycline pills. The pain in my urethra and penis has almost completely gone so I decided to masturbate. Would I be able to reinfect myself with Syphilis,Gonorrhea, and or Chlamydia if the sperm of course has to go through the urethra and some came in contact with the penis tip where a old Syphilis chancre (now closed) was. Does the bacteria spread into the sperm after 20-30 days having the STDS? I'm very scared and don't want my condition to go back to burning urine and the penis being sore/inflammed.