Breastfeeding vs. Conception

On Friday I will have made it to my minimum breastfeeding goal- 6 months. We now have to decide how much longer I can go. Since breastfeeding inhibits conception and it took medical intervention to conceive Boyo what should we do at this point. We made an appointment at our fertility clinic and they prefer that breastfeeding be wrapped up 2 months before they start treatment! We're going to have to do some research here. I don't want to shortchange Boyo for a child we might not even be able to conceive but I will be very happy the day I can stop pumping at work.