Dear Linda,
Glad that you have found this community as well!
Regarding your question, your low viral load lowers the transmission risk significantly, as well as using a condom.
Transmission can still occur through oral sex, particularly when you are menstruating, so dental dams are recommended. However, I do realise that these have a bit of a marketing and availability problem - see https://www.glamour.com/story/what-happened-to-the-dental-dam, I don’t know if things have improved. I did find out though that you can make them out of condoms - https://www.cdc.gov/condomeffectiveness/Dental-dam-use.html.
Of course, the best protection would be for your partners to be vaccinated.
Perhaps some @HealthExperts could weigh in here to talk about some things I may have missed.
Hope this helps.
Cheers,
Thomas