You can't get hiv when you used a condom, and she knows that so no wonder she blocked you. She is likely negative anyway because she wouldn't pay for condoms if she was positive, but that doesn't matter since you had no risk for hiv.
You need to move on from hiv theories and stop googling for death cold turkey and stop examining your body looking for symptoms to a disease you can't have.
People cough on your lips and door knobs so sore throat is to be expected at any time, including after you have sex.