It is perfectly normally. It is all the tar and crap in your lungs coming up. Mixed with your lungs starting to heal. You might even be running slower now. But dont worry that feeling will go away with time, and you times will come back down. It takes a couple of months, its different for every person. Congrats on stopping, it is the hardest thing I have ever done. You might also put on 5 pounds or so, I just stepped my cardio to take care of it. Best of luck to you.
