Tested 4 months 10 days hepatitis b and c, vdrl, hiv 4th generation test (duo) ag/ab test all came back non reactive. Still I have symptoms like swollen tongue, thick saliva ,if I take gap 1 hour to take water white tongue with foamy saliva, uneasy in mouth like thick sticky. After exposure all this happens. I have taken azithromycin, cyfaxine to cure hidden disease after 10 day of exposure. The above tests for hiv, hepatitis b and c, vdrl conclusive@4 months? If any ongoing cancer or tumour. This is main concern. Please help me. Is my result conclusive still I need to test further because decimals are keep on increasing each time I test.@5 weeks 0.250 @6 weeks 0.077 @9 weeks 0.250@12 week 0.293@18 weeks 0.323.getting scare. Please help in all special conditions like cancer tumour what indicates my 4 months 4th generation hiv test ag.