I've [35f] been with husband [37m] for 15 years. Tested positive for HIV.

I never thought I would have to post here.
Blah blah blah back story. We have 3 kids [1,3,4] and been married for 6 years. Love him to death. Solid relationship. NEVER has given me any reason to suspect him of infidelity. Blah blah blah
I had a routine gyno appointment and they sked if I wanted an STD and HIV/AIDS test. I said yes. (I get a test every appointment. I was tested in the begining of each prenancy and have always been clean.) I got a call a few days later that said I was positive for HIV.
I have been sitting on this information for about a week now and I have no idea how to confront my husband. I've never felt at a loss for words when it comes to discussing something with him. I am trying to come up with a way to ask him without accusing him, but how the hell else would I get this? I have never cheated on that man in my life. It had to be him. And now I'll be taking pills for the rest of my life.
I'm scared to know the truth. I'm scared to lose my family. I'm scared of dying because that prick decided I wasn't enough.
I have been so angry with him and he has definitely noticed. I've been falling alseep on the couch or with my kids on their bed. I haven't been texting him throughout the day like we usually do. I haven't spoken more than a few words to him since I found out. I'm trying to process everything and decide what I want to do from here.
He asked me what was wrong this morning but I couldn't even look at him without disgust. He went to try and hold me but I pulled away and told him we will talk after work. I am not ready to have this conversation. We have talked about cheating several timea throughout the years and have agreed that we would break up before we cheat. He knows that if he cheats I am done.
How do I talk to him without letting this anger and betrayal I feel dominate the conversation?
Tldr: husband cheated. I have HIV. Woo


Source.

My first thought is supported in the source link...get another test. False positives do happen.
And HIV isn't spread through just sex.

Test again, and if positive, talk to your hubby immediately.