Is back pain a symptom?

Kell

So yesterday i was 6dpo. I experienced bad lower back pain. Today I woke up and its still a lil sore but not nearly as bad as yesterday. Af due on Oct 6th or 7th. Anyone expereance this and get a bfp? Is this even a symptom lol? I'm sure its probably nothing... But figured I'd ask. Also having very light cramps in my lower abdomen today but that's about it.