Question???

I am 9dpo AF is due on the 31st. I never get any cramps before she just always shows up. Last night I had the worst pain in my right side abdomen. My eyes were legit watering. My husband tried to help but nothing helped. Has this happened to anyone before?? What was it? And what do you ladies think it could be?

(I'm doubtful that implantation is so painful but I'm not sure)

Please drop comments, thank you.