I might developed some kind on hiv hypochondria, or serious health anxiety.ihave 3 negative tests and i still think about it.how can i get my life back?

CBT: If the fear is intense but nor reasonable, consider cognitive behavioral therapy.

Meditation: Since the facts are clear you don't have HIV you need to focus on letting go of something that isn't real. Imagine a bonfire where you sit in front of. Write your concerns on a piece of paper, crumple it and throw it into the fire and watch your concerns disappear into smoke. When the thoughts reappear imagine them once again disappearing into smoke.