divorce is just a word, you are obviously still there for him where it counts, don't fret that one too much, or delay the process if you can until all the results are in.
the AIDS test
is done for free in many clinics, and Dept Of health, they don't take long
to come back with a result. He can always have it done at the next blood work.
don't forget to take care of yourself also, stress is not good for ANYone, healthy or not.