Is fertility hereditary?

Ashton
I know every body is different, but how much do our genetics impact fertility? It only took my mother a few months (less than 6) each time she got pregnant. She was pregnant 3 times and had one miscarriage. My grandmother was the same and was pregnant twice with 1 miscarriage. However my sister tried for 6 years and was successful with <a href="https://glowing.com/glow-fertility-program">IVF</a>. She has PCOD. I don't have any obvious signs of PCOD, but it's in the back of my mind. My fertility journey is only just beginning, my husband and I have only been trying 6 months. It still worries me though. At what point do I see a specialist. My regular OBGYN says give it a whole year and the we will start creams first and then possibly medications. I