Two condoms together do not offer "double protection", rather the probability of their failure increases, therefore always use only one latex, if involved in penetrative sex with someone outside your mutually committed relationship.
Ohh, for "quality" of pleasure, even one is not condom (even you opt for an ultra thin featherlight) comparable with bare skin to skin contact, because how about having a lollypop with the wrapper on. But the main objective of a condom is to protect yourself from HIV and STD's, a job, done very effectively by an intact latex.
Don't use two condoms, It is more easy to broken than one and reduce your sexy pleasure.
you have no risk.
if you are going to worry like theis you need to stop having sex with a csw.
You're safe at my last test I was past the window period for over 40 girls I was negative.