Cin 3

Hi guys im new to this, and thought I'd try it out for a little extra luck to conceive. Me and my boyfriend have been ttc for 6 months. In the last year I have had two abnormal smears both cin 3 and had to have treatment both times. i was told by the consultant that the op lowers your chances of being able to carry a baby, I'm unsure if it can affect getting pregnant too??? If any body has been through anything similar or knows more about it I would appreciate any feed back. My next appointment is in December and I'm dreading having anything else done and it affecting my fertility more