Can I possible have HIV

I was in the swimming pool with a girl, I had my tight boxers on and she had her swim suit on also. we were grinding each other but our underwears were still on while inside the swimming pool, I fear that my penis may have touched her vagina and im going crazy cos I amd thinking all sorts in my head. My tummy and right thumb started itching me some days later and I am soooo scareddddd..pleaseeeeeeeeeeee help

[Teak]

HIV is unable to reproduce outside its living host (unlike many bacteria or fungi, which may do so under suitable conditions), except under laboratory conditions; therefore, it does not spread or maintain infectiousness outside its host.

HIV is transmitted by;
Unprotected penetrative anal and/or vaginal sex
Sharing works with other IV drug users
Mother to child