I just purchased and received a new 9’ x12’ $350.00 dollar shag rug today.  My almost 1 year old Shi Tzu just pissed in one spot, not a little, but a lot.  She hasn’t had an accident in the house in many months as she potty trained quickly early on.  
What do I do?  I grew up in a very dirty dog ridden crap and piss everywhere home and this incident just confirmed why I don’t want pets or anything to do with animals.  Any accidents trigger severe PTSD in me taking me back to those days as a kid.  Why have anything nice when all they do is ruin everything?  It’s like buying that brand new car and getting it scratched within hours of driving it home.  I had a severe meltdown and my anxiety meds don’t refill until tomorrow.  I made a promise to my wife that I wouldn’t get rid of the dog, but I take the anxiety she causes me much longer.  I’m still shaking and cannot calm down.  Please help and advise.  Thanks in advance!