Although quitting smoking has a lot of health benefits associated with it, your body is still going to suffer through the withdrawal symptoms.
The first of these popped up about 5 days in - I gave myself a mouth ulcer. Craving cigarettes for me is like a thirst, that I can taste in my mouth, and I can only fix it by smoking cigarettes. Without it I get a little restless. I guess mixing up the saliva in my mouth to counter the thirst lead to the ulcer. Unfortunately this wasn't the only ulcer I gave myself, two more popped up in the coming days. Annoying stuff. I used ulcer medication to make sure I could eat without it hurting when I ate and swallowed.
My throat then started getting sorer and sorer, which was a pain because I had a gig coming up. The sore throat made it had to sing, and eat again. It's effect on my range was such that it cut off the higher end of my range, which I used for some songs. I was getting nervous the night before my gig, as I wasn't able to sing the songs the way I wanted to. I ended up taking a whole heap of medications and vitamins before the gig, and drinking lemon water through it, and it went well.
Now 4 days after the gig my throat is still sore. According to internet resources this is because little hairs in my throat are growing back. That's what's starting my cough too. Yay for coughing and sore throat because you quit smoking.
I've also started feeling head sick and vague. This is no fun, especially as I try to study for my Masters degree. Hopefully it will be gone in a week or so.
On the bright side;
I don't crave cigarettes anymore. I just feel like crap instead .
My range didn't shift again but it EXTENDED! Woah. It reclaimed my lower notes, whilst keeping the high ones. What does this mean? I have no idea, but today my voice covers a tad over 2 and a half octaves. Nifty! My singing teacher doesn't know what to think, because even though I complain about a sore throat, I have better control over my voice than I have ever had.