Advice please!!!

Ash
 I'm so frustrated. We have been TTC for 8 months and no luck. I've been tracking my ovulation with strips and bbt...eating clean, prenatal vitamins, hubby is taking multivitamin and limiting beer and wine for both of us. I really thought this month would be different but nope, stupid AF is here again. I don't know what we are doing wrong and I'm starting to think there is something wrong with me. None of my friends understand how devastating this is to me. I want a baby so bad and it seems like everyone else has no problem. What have those of you who have succeeded with at least one pregnancy tried?? I'm desperate.