I apologize if I'm over posting I can't except that I'm negative because some people at the hospital that I got tested at tell me it can take up to a year for a positive person to test positive the stress and worry is killing me when someone tells me stuff like this and out of nowhere my throat is sore it's Been 4 months since the event of possible exposure and I've tested 6 times already I'm losing it and now I'm mad just as much as I am scared,back in 2009 I was diagnosed with large b-cell lymphoma and chemotherapy and radiation was used to treat could this treatment be causing me to not produce antibodies? But then all my test were duo so antigens should have been pick up in the 3 test I did from 2 weeks to 6 weeks after I believe, I just don't know what to do anymore please help and thank you