HIV test:Hi had unprotected vaginal sex with known person, but unknown STD status. Had HIV RNA test at 36 days, 4TH gen test at 3months, and 4th gen test at 4months. All negative. My anxiety is getting the best of me. Do I need further testing?

Probably not. However, to be sure get a HIV nucleic acid test at 6 months after exposure.
Wish you good health! - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex.