today i was working on cardio on a elliptical and the bars to hold on to are very rough, and when i was done i had noticed that my hand was slightly bleeding. i always wipe the machine down before and after with disinfectant spray and when i noticed my hand was bleeding i used hand sanitizer and put on a bandaid. it is a public gym and people there are not very sanitary with the machines am i at risk at all for hiv?