Easy@home tests...

Leah • ✨Leah✨PCOS 👣🌈 Angel baby 12-13-17 👶 Arianna Kaitlin 8-24-09💜 Engaged 💍 Rainbow baby due 11-21-2020 🌈

How reliable are these tests with ovulation and pregnancy? I wanna know before I purchase them because the last ones I bought were crappy! Always invalid....