i would like to share my experience here, i am not sure about it but, well i had PCO, i started trying to conceive at age 27 ( got married at 26). And i was told i am high on insulin resistance due to diabetic background, i had very irregular cycles, had uncomfortable infection in discharge…
i did take some homeopathic medicines, BCP to regulate periods but nothing helped.
Then i started taking meethi dana (fenu greek) soaked water once in the morning and once in the evening. What i did, i took one glass of water, put 1 teaspoon in it, let it soak for the whole night, and drink it first thing in the morning, its tasteless so no problem at all as per taste. Then i used to fill the same glass with the same meethi dana, with water and drink it any time in the evening. I dont really remember for how long i kept doing it, but then i conceived at age 29, luckily.
Ofcourse i used to pray, and i had lots of people praying for me, but this is one thing i did and i think it helped too. because i read, meethi dana (fenu greek) helps in lowering the sugar levels in blood, also one thing i noticed, the infection cured after i started drinking meethi dana water.
Rest Allah knows All. But it doesnt hurt trying specially when its completely natural !!
I wish you all healthy pregnancies amin. Just wanted to share my experience 
i totally understand what all of you out there feel… may Allah bless alllll