Smoking. Can I Get Some Type Of Cancer ?

Hi im 27 years old, my height is 5 feet 1 inch, weight is around 55.I smoke quite irregularly but when i do it goes on for around two weeks with 3-4 cigarettes a day. I understand that it is not right to smoke but i have promised myself not to smoke ever again.Last time i smokesd was before november last year and now for the past 2 weeks. Please tell me if i may get some type of cancer .I am married n plan to have a baby early next year so i am not touching cigaretts again. What tests should i go for to be sure that my reproductive system , breasts and lungs and othet parts are not effected due to my irregular habit of smoking. In the past i have gotten pregnant twice once in february 2009 which was an ectopic pregnancy , went through an ectopic surgery (laproscopic) in which they removd the right fallopian tube as it was infected.The second pregnany was in november 2010 but till the 3rd month there was no heartbeat and inappropriate growth of the baby, so it was that pregnancy was also termninated. When i press my lower abdomen i feel slight pain also my periods are due after 8 days. I have stopped smoking and plan for a baby early next would this irregularity og smoking cause me any health issues...?Regards