My Body Loves Tormenting Me

Ok, so I'm not pregnant yet but has anyone noticed a week before their period, they notice their body is playing tricks on you? I slept in till 1 pm (not intending to at all.), boobs are killing me, I'm nauseous as hell, I about threw up when brushing my teeth, and I'm minorly cramping. Now my body does this and I start my period but not this extreme. So does anyone else think they are and it's just your body saying, "Haha! Your not pregnant but I'll let you make believe!" I'm 8 dpo.