What should I do?!

Hi! First month ttc- used opk and ovulated on time (I have a 32dc) my husband and I Bd every other day before and on/after ovulation. Week later up until now I was super naseua - terrible car sickness - the. only sick after 4 pm. Ordered my fav salad one night bc I was craving it I took a bite and was disgusted! I am also a teacher so the second week of school I got a cold (this was the week of bd) and exhausted beyond belief. So I keep blaming going back to school as tired (and this class is exhausting lol) so tired that everyday for two weeks I'm going to bed BEFORE 8 pm! I was in bed last Friday at 630! all last week I had really sore boobs and mild cramps. I use 3 apps bc I'm crazy lol and period tracker has always been my go to for years. I downloaded the flo app and just a few days ago dl this app. Flo says I'm 4 days late but this one and period tracker tell me today is my due date for AF. Now today I have barely any symptoms but boobs are sore if I press, and I'm wet. Sooooooo I know chances of getting pregnant on the first try is pretty rare, but I have high hopes. I've also been real stressed this month so I know that could push my period back too.... should I take a test?? When's the best time after a missed period?! Tia!