Eating healthy decreased fertility

I've seen so many articles and blogs about this after going much research and it seems to be true with a few of my friends that eat terrible vs the ones that eat super clean. I have super clean diet, no dairy, organic, no dark meat, exercise daily, etc. And I'm finding it harder to get pregnant. I also just had a baby 10 months ago and that also plays a big role in trying to concieve seeing as my body isn't fully recovered. It was recommended to buy a protein shake to gain the necessary vitamins that I needed so I ordered a whey protein shake and just relieved it today! so fingers crossed it works! So excited!!