Post cunnilingus I suffer an intense itching rash on face, nostrils, and eyes; why?

[Nashville609]

I am a 53-year-old male and I had unprotected genital and oral sex with a female stranger on 10/14. Over 3 weeks later, on 11/05, I was tested for the full spectrum of STD’s; all which came back negative (see results below).

However, within the week following the encounter, I experienced an intense “heat” rash to my face, nose, eyes and eyebrows that resulted in very itchy pustules appearing on my cheeks and the inner rim of my nostrils.  With the negative STD test results, what could be the cause of the rash which continues?  Though the number of pustules have lessened and are hard to see (lucky for me) they remain itchy and worrisome.  

I am just beginning what I hope will be a long-term relationship with a woman and do NOT want to pass anything on to her.  Therefore, what could be the cause of this rash?  Can I pass it onto her through kissing, for example, or through oral or genital sex?  I am currently looking for work, missed the window to sign up for the Affordable Healthcare Act by 4 days and, thus, currently lack insurance.  Your advice would be most welcome. Please advise.
Sincerely,  Nashville609

STD TEST RESULTS 11/1/16
HEPATITIS B SURFACE COMMENTS: FASTING:NO
Test Name                    In Range       Out Of Range     Reference Range     Lab
......................................................................................
HEPATITIS B SURFACE                                                                                AT
  ANTIGEN W/REFL CONFIRM
  HEPATITIS B SURFACE
  ANTIGEN                    NON-REACTIVE   NON-REACTIVE
CHLAMYDIA/N. GONORRHOEAE                                                                 AT
  RNA, TMA
  CHLAMYDIA TRACHOMATIS
    RNA, TMA                 NOT DETECTED   NOT DETECTED
  NEISSERIA GONORRHOEAE
    RNA, TMA                 NOT DETECTED   NOT DETECTED
    (See Endnote 1)
RPR (DX) W/REFL TITER AND                                                                     AT
  CONFIRMATORY TESTING       NON-REACTIVE   NON-REACTIVE

Endnote 1 This test was performed using the APTIMA COMBO2 Assay (Gen-Probe Inc.).  The analytical performance characteristics of this
assay, when used to test SurePath specimens have been determined by Quest Diagnostics.


Test Name                    Result         Reference Range                     Lab
......................................................................................
HIV 1/2 ANTIGEN/ANTIBODY,                                                        AT
  FOURTH GENERATION W/RFL
    HIV AG/AB, 4TH GEN       NON-REACTIVE   NON-REACTIVE
  (HIV-1 antigen and HIV-1/HIV-2 antibodies were not detected. There is no laboratory evidence of HIV
infection.)

HEPATITIS C AB W/REFL                                                               AT
  TO HCV RNA, QN, PCR
    HEPATITIS C ANTIBODY     NON-REACTIVE   NON-REACTIVE
    SIGNAL TO CUT-OFF            0.03          <1.00

[Life360_Dave]

Hi the face is a common place for allergic reaction rashes and if you gave her oral sex and a rash appeared on your face a week later, maybe its some thing she put around her vaginal area like a duce or something.
But bottom line what your describing is not a symptom of any std.