Is Headache A Side Effect Of Champix?

Hi I have been taking champix for 9 days now and just started the 2 tablets a day of 1mg each. I have noticed a dull headache on the lhs of my head for the last few days, I am also taking 10mg talam (generic brand- antidepressant) per day. Is headache a common side effect of the champix or could this be the mixing of the two medications? I am a 37 yr old female and weigh 55 kg, and 5 foot 1 tall. I have no other medical history. I have cut down from 25 cigarettes a day to about 5 a day in the past 3 days, due to the champix, my quit day is tomorrow.thankyou.