Hello and welcome to HCM.
Thank you for your query.
First of all, from your scenario it doesn't sound like there was any contact between your bare penis and the woman's genitals. This makes it nearly impossible for any transmission of disease.
But, just for your satisfaction the few tests that you could get conducted are: HIV PCR DNA
test after 21 days of sexual contact and a sexual disease profile at the same time.
In the meantime, if you do experience any symptoms you could visit your doctor at the earliest. But, otherwise nothing to worry about. And no treatment will be required unless any indications are present. I would also advice you to abstain from any sexual contact with sex workers as you are soon to be wed, and contracting any infections could result in transmission to a your future wife.
I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications. I would gladly help you.