Not feeling well

[Opidfght]

Anyone had these problems after quitting smoking ? 1 . Light headed off balance like you feel like your going to fall. Heartburn  so bad your eating tums like there candy no matter what you eat you have acid reflux  and heartburn. 2. No coughing but feel like there's something  in your throat  but can't cough. 3. Sleep all you want to do is sleep. You feel tired all the time. Is any of this normal after quitting smoking. Today is day 15  for me . Any suggestion  out there as to what might be causing any of these. Should I be worried..?.?..?