CDC estimates the risk at 1 in 1,000 for transmission from an infected male to a female partner. It's estimated at 1 in 2,000 from female to male. But both estimates are very rough. Precise data to not exist.
There is virtually no risk through vaginal sex when the infected person has a viral load under 50.
HIV is not transmitted through food, or through small amounts of swallowed blood. And it seems very unlikely the spots were blood anyway.
This question is on the wrong forum (see the IMPORTANT notice above), so no further discussion here. Sorry.
HHH, MD
Symptoms make no difference in judging whether or not someone has HIV; only the blood test matters. WBC count is usually normal in HIV and doesn't predict what an HIV test will show. As in the original reply above, you describe nothing that suggests you have HIV. Follow your doctor's advice.