I hope you can get some sleep soon. I have AIDS not HIV for close to 16 years. I knew in 1993, came to Canada in 1996, was engaged in 2003, married to my best friend in 2005. He married me with my baggage, my Bi polar and AIDS. It is called unconditional love.
You are doing well to ask questions. Knowledge is power.
About the oral sex, think about this. Blood has the highest level of HIV in the body. Semen has a quarter of the what the blood has. If the virus in the blood is undetectable, how much less virus do you think there is in the semen? Less than the blood. Oral sex is a low risk. Don't brush and floss your teeth before a hot date. Wait at least 30 minutes to an hour. Don't eat sharp food, eg chips etc as well. In other words, keep up with your mouth hygiene.
Because of the above about the levels of the virus, some magnetic couples go at it without protection. I personally think that is crazy. The blood is undetectable only up to 50 copies and most recently up to 40. There is some virus in the blood.
We use condoms faithfully and we are not crazy about oral sex. Occasionally I will perform on him just to drive him crazy

and I don't use a condom. It is bad enough on its own leave alone with a condom.
Yes, we don't know the after effects of these medication the same way we don't know if you will wake up tomorrow...See?
Please continue to educate yourself and sometimes you have to take a chance...yeah in this life.
I wish you a hesitant free journey. Feel free to ask me any questions, I am an open book.
Here are more stories of magnetic couples. You might have read. I am the dark lady 5 years later.
http://www.visionpositive.ca/e/V6I5/Magnet
ic_e.htm
Peace...
Muthoni (Mson)