Concerned help plz 🙏🏽

Today makes the second day my discharge looks like this. Yesterday it gave off an odor that smelled like vinegar, today it's odorless. I have no idea what could be the cause of this. Also the <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> app says I'm supposed to get my period today the app is almost never wrong and if it is, I get my period the day before the app says so. My boyfriend and I do have unprotected sex and use the pullout method which I am aware isn't the best method. At least twice this week he was concerned that he didn't pull out fast enough. I'm a little worried I might be pregnant. Should I tell my boyfriend that my period is late or should I wait a few more days to be completely sure?