Pituitary lesions.

I have lesions on my pituitary gland in my brain and I have been having problems with infertility. Well, I just found out they could be related. Is that true? I'm talking to my doctor on thursday about getting some help with conceiving as it took 3 years to conceive my son. And over a year to conceive my daughter. And once again I'm having the same problem. I dont even think I'm ovulating most months and its killing me :( any tips or tricks. What should I say to the doctor to increase my chances of him helping me with fertility. I've tracked with opks and the first month I tracked I had 5 peak days and one regular positive day. And this month I had 1 peak day 2 days after period? Then in between those months no positive whatsoever.