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 eve 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?