Regarding HIV. After the intercourse..

In some people, persistent swelling of lymph nodes occurs during clinical latent HIV. Otherwise, there are no specific signs and symptoms. HIV remains in the body, however, and in infected white blood cells. Clinical latent infection generally lasts around 10 years if you're not receiving antiretroviral therapy. This phase can last for decades in people taking antiretroviral medications. But some people progress to more severe disease much sooner. If you receive no treatment for your HIV infection, the disease typically progresses to AIDS in about 10 years. By the time AIDS develops, your immune system has been severely damaged, making you susceptible to opportunistic infections — diseases that wouldn't usually trouble a person with a healthy immune system.