Foods to avoid?

Nicole • Married 3 years! 💞 TTC for 3 years. MC 11/15. BFP 3/16. First baby due December 1st, 2016!!!
Hello lovely ladies!
My husband and I are starting our 4th cycle of IUIs. We took the summer off after 3 failed cycles. 
I'm just wondering if there are any ladies out there that went through IUIs, and had success that could give some insight on certain foods that shouldn't be consumed while TTC, or foods that may help with both male and female fertility? 
I have PCOS, and we've been trying to conceiving for over 2 years now.