Your question has been fully answered regarding how HIV is transmitted and that you had no risk.
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This virus needs specific host for transmission. Water, air or any other environmental factor is not one. If any of them would have been, HIV would have perhaps been like common cold, which certainly is not the case since this is a complex virus and can be transmitted only in specific conditions. Unprotected vaginal / anal intercourse or sharing needles to inject drugs with other users are only viable risk for adults.
No one has ever been infected in the fashion you described, you are not going to be the first one. Your fears are irrational, you have been already offered the right insight, it's time for you to accept it and move on with your life. See a therapist if you cant think rationally.
You did not have a risk. In an adult, only unprotected anal/vaginal sex and sharing drug needles with infected users is a risk for HIV.
Sorry, to be clear, I’m asking the risk of me being infected i.ie HIV or other STDs entering my body through my penis hole via water.