When you quit smoking, serotonin levels will drop and it has been found that reduced serotonin levels can lead to migraines.
When you have a tension headache, you may feel like there is a tight band around your head, squeezing tighter and tighter around your temples. You may also experience pain in your scalp or neck.  Though tension headaches are the most common type of headache, their causes aren’t well understood. Experts believe they may be triggered by responses to stress, depression, anxiety, or injury.  With the right treatment, you should be able to find relief. 
Disclaimer: This information is not intended to be a substitute for professional medical advice. It is provided for educational purposes only. You assume full responsibility for how you choose to use this information.
“The postdrome is a constellation of symptoms that persist beyond the resolution of headache. Many of these symptoms appear initially during the prodrome or with the headache phase. Commonly, patients report anorexia [loss of appetite], nausea, muscle tension, fatigue, and cognitive impairment. This phase has been termed the migraine hangover and can last and produce disability up to 1 to 2 days beyond the headache phase. The pathophysiology of the postdrome is unknown, but likely represents a gradual recovery phase from the extreme neurologic disruption that occurs during migraine.” — Clinical and Pathophysiological Anatomy of a Migraine Attack , Medscape