Statistics & Probability?

✨sparkle🐠cubs™️✨ • Twin Momma, 🚨💉💊, married to my best friend, ALLY & bleeding heart liberal!
Hello pretties! I am currently in the middle of my TWW & have THE BEST cycle group ever! There are about 30 ladies in my group, & 2 of those ladies have already gotten their BFP's (🎉🎉🎉so stoked for them!), but now I'm worried that statistically, my chances are not as high anymore😕. So my question is, on average, how many ladies in your cycle group get BFP's every month?