Ava or no Ava

I am curious if anyone has been using Ava bracelet and if it’s “worth” the price? Little background....My husband and I have been TTC since April 2019. We had a miscarriage in March 2019 after having a normal pregnancy/son in 2017 (no issues conceiving took 2-3 months after stopped my birth control pills). I feel like my hormones have been off since then and have been tracking with OPKs and apps and such...I’ll be 35 in November. I’m just curious if I should consider purchasing Ava since it’s only been ~5 months now of TTC. We are ready for our rainbow 🌈👶 and every month I keep getting my period it gets really discouraging...