Not getting my BFP... What should I try?

Jenna • Trying for a baby grimes!! (: so excited ☺️
My husband and I have been trying for 8 months and I am REALLY feeling down. I feel discouraged. Need advice on what I should and shouldn't do. My husband is even feeling down about it. Thinking about trying PreSeed.... Anything else I can do?? Or he can do??