<human>: Give me a shortened version of the text

So, a few weeks ago I had an episode of still unknown origin where I fainted and was laying unconscious with my eyes open for a good 20 seconds. I possibly hit my head on the way down and it may possibly have been a mini seizure, which I have been undiagnosed with. I lost my insurance a week prior to this, so my ER visit obviously racked up a large bill. My boyfriend was there during the incident, and drove me to the hospital, and has spent the subsequent weeks stressing about my insurance and not being able to financially afford the bill (on top of my other medical debt). I recently started making more money at work, so I no longer qualify for state insurance, but I also barely make above the cutoff and can't really afford any other insurance. 

He has been stressing about this so much that he has been talking to other people about what happened, like his mom, and his older sister, causing them to worry about me. But last night he went out alone with a girl whom I have a history of problems with and blabbed everything to her, as well. I have a huge problem with them even seeing each other, and then to hear that he's telling her my personal health information and asking her for advice on what kind of insurance I should get (the girl and I share a company employer but don't work together, thankfully) just made me really upset. He thinks I'm being ridiculous saying that it was something that happened to him, as well, and doesn't think it's a big deal that he told her, since he's told family and friends (that I actually like and trust) and I had no problem with it.
<bot>: BF blabbed about my personal health and income information to a friend of his whom I hate, thinks it's no big deal. Am I overreacting or is he in the wrong to share this without my permission?