Oh, OP. I have been exactly where you are 
I started having flu like symptoms and found a swollen gland in my underarm. This was about 6 weeks after a very suddenly drunken night out where I couldn't remember getting home and woke with a scratch on my inner thigh. I still don't know what happened that night. I had a 4 yo and I was terrified, but I couldn't bring myself to get tested.
Over the next few months and even years, I displayed soooo many symptoms. Petechaie , lethargy, more swollen lymph nodes, muscle pain. You name it and I was experiencing it. I actually went to the GP after about a year. I didn't mention HIV. I just couldn't. She didn't even mention blood testing me.
The symptoms persisted - itching, cramps, etc. Still I couldn't face being told what I already knew - that I had it. I read up so much on it and convinced myself if I looked after myself, took vitamins, etc. I'd live to see my son reach his teens. I started writing him a letter to tell him what he meant to me. But I still could not face having it confirmed, despite reading all about the advances in medicine, it was the stigma for me and my son that scared me.
Eventually, in 2015, I couldn't take the symptoms anymore. I plucked up the courage and went to the GP again. She was a locum this time. I broke down in front of her. She told me it was highly unlikely that I had it, and that I was probably making myself ill. She prescribed me anxiety medication and took my bloods.
Yes, they were negative, and yes, since then I am pretty much clear of all the symptoms I was having.
But I lived in fear for years. And that was shameful and selfish of me.
I wish you the best of luck. Get this done and get on with your life, either way.
But I have no doubt you will be fine x