Pregnancy after lletz treatment

Hi 

I'm 33 wks with baby no 3. I had lletz treatment 2 years ago. I remember bring told at the time that it could affect future pregnancy two ways, either weaken the cervix and cause early labour or cause issues with dilating during labour. At the time we weren't planning on any more so didn't ask further questions, should I have had further appointments to see how I'd healed? The thought of quick labour doesn't bother me, baby no two was 18 mins established labour, but the thought of issues dilating concerns me.