Hello
As you mentioned that you are a regular blood donor for last 3 years . You also donated blood just 4 months ago .
Blood tests are done for STDs, HIV and other communicable diseases before any
blood donation i.e. 4 months ago you were HIV free.
Now you mentioned that you are having symptoms simulating HIV infection symptoms , so also your child and your wife .
But I doubt ,that all of you are HIV victim .
Since you are in so STRESS so I recommend you get in P 24 nucleic acid amplification test ( pcr , rna )not only for you but also for your wife and daughter .
For your information I am writing the symptoms of HIV infection:
Fever,
pharyngitis (
sore throat ) ,
lymphadenopathy ( generalized ) , headache/retro-orbital pain, arthralgias/myalgias, lathragy/malaise, nausea/vomiting/diarrhea , anorexia /
weight loss.
Other are ;erythematous maculapapular rashes , mucocutaneous ulceration ( in mouth and on the tongue i.e. white coating type ).
These symptoms presents virtually in all patients .
Since you din't mention the complete history of contract so it is very difficult to establish any diagnosis .
Hope this will help you.