I had protected sex with a woman
After 21days I tested with insti antibody test it was negative
I have not seen any HIV symptom on me
How accurate is test after 21 days
As you were told by AnxiousNoMore, your risk never existed because you used protection and the protection did not fail during the sex. You did not need any test for this protected exposure. Calm down, relax and move on with your life normally without wasting further time and money on HIV testing.