Can Seroconversion Cause Truncal Rashes?

What is the shortest amount of time to HIV seroconversion illness? I experienced the symptoms of seroconversion illness (cough, sorethroat, truncal rash, sore muscles, fatigue, inflammed inguinal lymph node) but the symptoms started 1 to 3 days after the only potential HIV contact. Is it possible these were seroconversion illness or can influenza/cold viruses cause truncal rash, and the other symptoms I mentioned?