Stopping birth control

My partner and I have decided it's time to actively not use birth control anymore. I just finished my pill packet and so had a period. According to glow my most fertile day is Thursday/Friday this week. How slim/normal/high are my chances of falling pregnant this month. I'm not using any OPK or checking my temp because I don't really want to obsess over it on our first real month. Just interested in what other people's thoughts are or if they have been in the same situation.
Thanks :)