Hi,
Welcome to the ehealth forum and I am glad to help you out.
Many people do not develop symptoms after they first get infected with HIV. Others have a flu-like illness within several days to weeks after exposure to the virus. It is true that HIV people often have molluscum rashes but it is not true vice versa.
HIV tests may show accuracy after 6 weeks to 6 months as HIV antibodies take time to develop in the body. So get repeat tests done after 6 months. Confirmation can only done by specific tests for HIV like western blot,PCR and ELISA.
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.