Cramping on the ride side??

Hi all I’m 8 dpo and my af is due in 6 days (according to the glow chart) from 1dpo I’ve been getting lower abdominal cramps on and off everyday and I’ve had shooting pains in my legs and bloating and gas and now I’m have lower back ache and my right side had a moderate pain goes into the right side of my back and on the pubic bone, I’ve not had sore boobs or now implantation bleeding. Just wondering what are people’s thoughts of what it could be. TIA