Seeking Explanation for Physical Pain and Blood Discomfort

So, weird observation that I can't find answers on online and playing phone hockey with my cardiologist is like bathing a feral cat. For YEARS during my worst anxiety+ physical pain I would be outright sobbing from the pain and could never explain it as anything more then "My blood hurts" and "My blood feels like acid." which was apparently unhelpful but it was the pain. I don't always notice what things leave until they come back but I've been on Beta Blockers for half a year now, and wasn't able to get my refill for the last week. And my blood quite literally hurts. Does anyone have a possible explanation? Can the inside of blood vessels get bruised or strained I guess??? I've had a resting heart rate above 100 and am active at my job, it jumps up to the 160s pretty regularly and usually hangs out between 125-140. I've also noticed being like physically exausted in the way you might after having a big fall or working out to much but it's like, after sitting at home all day. Anyway, I'll take my blood literally hurting over brain fog and fainting so 🤷‍♀️ and I finally got ahold of part of my prescription so I probably won't die. I was just curious if there was some sort of explanation on the pain? (The exaustion makes sense I've had that explained lol)