Confused

Yoci • Blessed and lucky! LA girl
I was supposed to get AF on nov 26th, took a preg test and  4 days later both days it was negative! Now I'm 7days late and no signs of AF only random cramping, nauseous at times, extremely tired, lower back pain! I keep logging and entering symptoms, & glow keep pushing my period date back, I'm soo confused! 😞 when should I test again?