I had protected sex. I’m almost certain the condom didn’t break. 30 days after the incident I had a 4th he ration hiv test which is negative. At the time of the test I had a a bad cold/flu. I could put this down to a normal illness because other people I work with are also ill. If it was a seroconversion illness would the test still pick up an infection because It’s conclusive after 28 days. Would it detect the p24 antigen and antibodies ? Thanks