5 days in with champix

I started champix in late December and have now not smoked for 5 days. I don't much feel like smoking but have not been feeling that great in general. I have been avoiding the nausea the pill causes by eating before I take it. I do think i have gained weight in the short time ive been on the champix but my stomach is very bloated and distended lately. Nothing is painful, just very uncomfortable. I also feel just as short of breath as if I was still smoking and still coughing a lot but my cough isn't as satisfyingly productive as it has been when I'm smoking. Now I have been a smoker for 40 years so I'm sure there will be some changes to endure as I recover from the addiction. Just wondering if anyone has had similar experiences with champix.