I got my 1 year old ball python a year ago and her health has been declining. I took her to the vet today because it was suspected that she might have internal parasites. They gave her fluids, dewormed her ( for the second time ) and took some blood.

It took the vet three tries to take blood from her because some stupid reason. When I took her home, I put her back in her cage. A couple minutes later I heard her sneezing so I went to check it out. When I looked there was blood splattered on the wall of her tank.

My main concern is that the vet might have punctured her lung trying to take blood and it caused internal bleeding. I'm really scared and my snake is the most precious thing in the world to me.

Right now, she is laying on the cold side of her tank and the sneezing up blood has stopped. But I'm still really worried.