Have a look at our “Know your chances” web page, it provides information on your chances of getting or passing an STI depending on how you are having sex.
I have never heard of a sex worker using a used condom with a client in Canada. Most condoms that are used come with lubricant already in them. I wonder if that is what you saw in the condom.
It may also be helpful to go and visit a clinic and talk to a health professional about your situation. Have a look at our clinic finder for a clinic in your area.
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