I have severe panic attacks when I black out

Last night a group of my friends and I went out bar hopping and I was fine all night. We start to leave and and suddenly I wasn’t okay at all. I don’t remember anything but hyperventilating in the car and trying to calm myself down. My bf was mad at me and I kept telling myself I was okay and to breathe. I don’t know why he was mad and this keeps happening. I start to black out and I fucking panic, I can’t breath and I just cry and cry and cry. I’m absolutely inconsolable. The last thing I remember Everytime is “fuck it’s happening again. Why can’t I just stop crying?” And then I blink and it’s the next morning.

I don’t know why this is happening. This was not a problem when I was a teenager and this wasn’t a problem until I hit my mid 20s. It doesn’t happen Everytime I black out, I just get filled with this feeling that I’ve fucked everything up and this confusion as to whst I did and what got me to this point. I don’t know how to fix it.