Hello - I really know how you are feeling right now, and I want to tell you that those feelings will gradually go away!!!! Please never give up and light another cigarette.
I stopped smoking forever 20 years ago. When I say 'forever' I mean that I had stopped a few times before that but always gave in because I weakened. As you know, it is a terrible, smelly, unhealthy, disgusting habit. I had friends who easily gave up cigarettes, but I was definitely not one of those!!!! I quit for the same reasons you did --I had a terrible cough (which disappeared after I had quit for only 1 week!); my children hated it; my husband had decided to quit at the same time.
Like you, I felt worse after I quit. I got a bad cold, gained 10 lbs. almost immediately, constantly had the urge to smoke, etc., etc. But also like you, I forced myself to not buy cigarettes. As time went by I noticed how terrible people's houses and clothes smelled who smoked. And, even though I loved the smell of the smoke when I walked by someone who had just lit a cigarette, I got so I didn't have the desire to "light up". It took me a very long time to not miss having a cigarette in my hand; but, I did manage to lose most of the weight I gained - some of it just gradually came off. I'm not obese by any means, but I would like to lose about 8 pounds. I do feel much healthier!!!!! I am especially glad I quit when I did because as rules about smoking in airplanes, stores, offices, continued to get worse, I can't imagine how I could have dealt with that!! When I smoked, the minute I found out that smoking wasn't allowed, I had the urge to "light up" right away!! Congratulations to you for being able to stop the addiction!!! You can be sure that every person who still smokes wishes he/she could break the habit!