I had a protected sex with sex worker then after I had cold which led to weakness and mild fever. Then after I do not had any symptoms. I tested negative by rapid trio dot test at 45,83, and 150 days all the result were negative. I was going fine with my life until I came to know that some people can be sero negative. So I also get tested by fourth generation hiv test which also came negative. My question is that if my body has not formed any hiv antibody do the antigen would have been detected. Do I need any type of further testing.