Implantation cramps!? Ladies please comment.

Age 20, TTC #1 this the 2nd month trying and the first month on glow.  Big question; have you guys been able to pinpoint implantation cramps? Just curious because today is cycle day 19 in a 26 day cycle and I got a sharp, persistent achy feeling in my left ovary and kinda my belly button for 10 minutes yesterday on and off for about 3 hours and again this morning then it went away. I usually only experience AF cramps 1-2 days beforehand never like this either and I've been very fatigued and getting the nauseated feeling but never actually throwing up, my stomach is turning a lot. I wasn't sure if implantation cramping was something you could remember taking place? Please let me know if you've experienced it first hand and have gotten a BFP! :) Here's my chart also