What have you used/done to get your BFP? Please! Any advice would be great!

Jules • 31 y.o. RN. Married. Mom to a lovely girl and adorable baby boy. I have 4 lovely cats. I love to read.
I'm 30, DH is 25. We miscarried in December and have been trying ever since with no luck. Has anything worked for any of you that gave you a BFP? I've heard of Geritol and Fertility tea. I think I'm going to try these two.