there is a way to fix the dresser: get a brick or two and put it underneath, in the middle, exactly as you said. It looks like a very nice piece, and is probably heavy, which is why it is collapsing. I actually think that if you take out all the drawers and then put the dresser on its head, you might find there was sthg there originally which supported the structure and the weight, and this is what the movers destroyed.
I have had heart palpitations forever and I'm 59. You are fine. It usually happens AFTER I have been anxious about something, not during that time. You are beautiful!!