Yes this is the first time i have ever had unprotected sex this month since i started birth control
They're not high, but they're also not non-existent. Was this the only time you've had unprotected sex this month? When you start a new birth control you need to use protection for at least the first full month while the pills start to become effective in your body. It's always best to use protection in addition to birth control anyways, as no method is 100%. If it concerns you, wait 2 weeks and take a pregnancy test with first morning urine. However the odds are terribly high.