Its expected if that is the case hope, as nicotine is addictive, and anything addictive that your body withdraws will force your body into turmoil. I will expect it soon myself, as I am now getting back into my exercise at a high rate, getting my fitness back to peek again, then giving up the smokes to no longer require them as a source to help me maintain myself any longer. That is the last thing I have to rid from my life that is unhealthy and unproductive in order to cope. Well done.