Hello I ve smoked for two years now, maybe 3/4 a day, and more socially with alcohol, all of a sudden after smoking I feel extremley sick and pain in my stomach, I recently miscarried and while pregnant gave up smoking completely, I misscarried at 6 weeks and found out at only a week in that I was pregnant, so I know smoking didn t cause the miscarriage, however now after every cig, I fall very unwell? What could this be?