After affects sre terrible

So glad I came across this site. I was starting to worry because I stopped smoking 3 days ago after 21 years. It is a long and aggravating process for sure. I've developed a severe cough which I understand to be cilia waking up and starting to work again. However, I cough constantly all day and night to the point my head has started hurting and stomach muscles are sore. It's become such a nuisance. I cough up lots of phlegm that's always clear in color, no icky color so far. My sinuses are messed up as well. Not sure if the headache is from sinuses or the coughing. Cravings come and go. Some not so bad others are really bad. I do vape some just to help in which it does. I actually told my daughter today quitting smoking feels worse than smoking at this point due to the hideous cough. I was hoping it would last just a few days but I notice mist posts were months of this. I feel doomed at the thought of months of this. I stay congested. I quit smoking in the past for 6 months and went back. I have my mind set that is is the last time. I literally feel tired all the time since I quit. Even though it feels like it's going to be a long frustrating battle I will stay focused and quit for good.