Are you still seeing the same doctor? If not, please get a new one. That doctor was required to educate you about the risks and benefits, first, before you signed the paperwork.
LEEP does run a slight risk of cervical stenosis, which would make it different to get pregnant. You can definitely have a doctor check for that, especially if you have had noticable changes in your menstrual cycle or increased cramps, since then.
Per the ACOG, it does run a 7.9% risk of cervical incompetence. But you can also have your cervix measured to see if you are at risk. Worst-case scenario is that you will require a cerclage (cervical stitch). But when are are ready to get pregnant, let your new OB/GYN know about the LEEP. That doctor will want to do everything possible to make sure you go home with a live baby. So, the more information the doctor has, the better.