Implantation cramps

Jenn
Hmm ok. Im 19 days into my cycle. Hmm think 8dpo. I have a 28 to 30 day cycle.
I had cramps and back ache like i have never felt like this before. I thought holy crap af is early whats wrong with me...anywho when i calmed down haha af didnt show but that cramping was something else for a day then bachache followed the next day, then nothing...
No spotting, nothing...
With my first i had the implantation bleeding but none of the cramps. So whats going on? Oh i felt nauseated on and off the past two days but thats it. Trying to not think about it, but i cant help it. ? what do you think?