Hi,
Well, while it is theoretically possible that you could have gotten an infection from her vaginal fluids being in contact with your penis, even without any ulceration or wound, it is by no means certain even that she was
HIV infected. If you have a doubt you should undergo a test for HIV. The usual
ELISA test can only give an accurate result after 3 months since the time of exposure.
Yet, sometimes it may need up to 6 months for the body to have enough
antibodies to activate the test. If the test is negative, you should stop worrying. If it becomes positive, get it repeated. Unless both tests are positive, don't believe positive results as the test can be wrong in positive results. If the exposure has been very recent, then special tests are to be used like PCR or DNA testing.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Zubayer Alam, General & Family Physician