Period LATE

Okay so I’m not sure if I should be worried or not . My period is 2 days late and is usually ON TIME !!! I’ve had slight cramping and that’s it . I’ve been really sleepy (which is normal for me around my mensural cycle) . I haven’t been stressed about anything , no unusual eating habits and no signs of being pregnant .. maybe I’m just worried 🤦🏾‍♀️ then on the picture below shows me having 2 periods for the month of May , which is never . Maybe my chart is off .. it’s normally accurate.. idk I’m lost and about to pull my hair .. Has this happen to anyone before ?