Implantation?

Hi, this is my first post...

Me and my Husband, are TTC. I am now 9DPO (according to Glow) and 4 days from AF coming over (also according to Glow).

I've had mild to medium cramping on and off, pinching pains in my abdomen - shifting from left and right, bit bloated, headaches on and off and also want to eat like crazy. I had some light, sticky, pink/red spotting yesterday. Could this be? I really want to be patient and wait to test.. been reading heaps of posts from others to calm my thoughts. Should I wait to see if AF comes or when should I test?