What should i expect after quitting smoking?

You will probably: have nicotine withdrawal depending on the amount of cigarettes you smoked daily by going cold turkey. So, you can feel all the symptoms you listed: headache, restlessness, anxiety, jittery, and uncomfortable, like you should have something in your hand. Some people use blank straws cut into cigarette size, carrot or celery sticks, as low calorie alternative, until that habit dissipates.