We're so glad you are here, SickInLove.
I don't know how my life spun out of control either - but here we are, trying to do the right thing and get free. The aches & pains I had the first month after quitting all went away. Our body has a lot of adjustments to make as we heal. As Scott mentioned, please be safe & talk things over with your doctor to be sure nothing dangerous is going on.
Welcome to a great place for encouragement & friendship. I'm so glad you've decided to change your life.