how likely am i to get pregnant?

Alex
I started taking birth control 9 days ago and my doctor said it would take 14 days to settle, so ive been using condoms, however the condom just broke! If i keep up with the BC am i still likely to get pregnant or will it kill the chances once it fully takes effect? 
If it helps, <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> says im in my fertile window, but <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> also never gets my periods right