I have been monogamous for 5 years with the only sex partner I have ever had. I did have std tests few years ago and all returned negative. 6 weeks ago, I performed unprotected oral sex (giving and receiving) with a girl I don't know in Mexico. After the encounter, she told me that she used to be a prostitute, but not anymore and that she is clean. One week later, I started to feel some discomfort while peeing and noticed a transparent discharge coming from my penis (I am not sure if it was something or just me being paranoid).
I went to and STD clinic and they gave me antibiotics for both chlamydia and gonorrhea, before they got the test results back (which came back negative). The symptoms disappears.
Now 6 weeks after the encounter, I started to notice blood on the toilet paper. During this oral sexual encounter, nothing came near to my bottom.
What are the chance that this is a symptom for genital warts or some other STD like Herpes? I have no other symptoms.
I am really worried, and I don't know how to get the piece of mind.