I have endometriosis and managed to conceive naturally even after being told by my doctor that it would likely be impossible. I read Taking Charge of Your Fertility before we started trying and I followed the book's advice of tracking my cycles and temping using a BBT. I tracked cycles and temperatures for about 6 months while still on birth control pills. My first month off the pill was our first month trying. We didn't conceive that first month and the doctor's words weighed heavily on us. I pushed through and kept charting my temperature using ovulation test strips to time things just right and that second month we were very surprised to find out that our attempt was successful. Our little miracle is 10 years old now.