Took birth control pill for the first time before period started

Hey everyone, so I started my first pack of birth control yesterday (Sunday) thinking that I started my period as it was expected to come today! Turns out it the blood came from a small tear and not my actual period... Should I continue to take the pill today? Or should I wait untill next Sunday once I've gotten my period. Also my boyfriend and I had protected sex with a condom a day or 2 before I was ovulating. It's been 3 weeks since then and I'm having PMS symptoms like sore breast, mild cramps and high libido... I just really want to make sure I get my period and am not pregnant , thanks in advance I really appreciate it!