3 Days Late. Implantation Bleeding?

First month TTC. Should be 16 DPO. AF is 3 days late. I have been gassy, more frequent bowel movements. No diarrhea but softer than normal. Sorry for the TMI. Cramping, bloating and experiencing a wet feeling. Not really wet discharge but I just feel like I need to constantly wipe even before this spotting started. My period has always been super regular. Does this look like implantation bleeding? UPDATE: Test was negative. AF came today.