Hello,
Welcome to the ehealthforum and I am really glad to help you out.
Your concern is regarding the transmission of HIV by oral sex. Oral sex with an infected partner carries a small risk of HIV infection and this risk if present if you have bleeding gums or tiny sores or ulcers somewhere in the mouth, which causes a risk of HIV entering the bloodstream.
Hence chances of HIV transmission are very less in your case. In case you are apprehensive about the status of HIV then you can get investigated for it.
Most people develop detectable HIV antibodies within 6 to 12 weeks of infection but sometes it may take upto 6 months. I suggest you to do a rapid HIV test which uses a blood sample or oral fluids and is easy to be done. This should be followed by a Western blot and PCR (viral load test) which can identify HIV in the blood within two or three weeks of infection.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.