Really confused

I am extremely confused. We’ve been trying for almost a year. Well December I started on the 24th. Skipped January. This month I was late by 19 days. I’m just now ended but AF started the 20th. Basically stopped for two days(little spotting only showed when wiping). Then started for another day an a half days(super light bleeding). Well today it was spotting for maybe an hour really light then stopped. Is this my AF or could it be implantation?.. I also had no signs of starting and when I did it was half way through the day and I had small cramping all the way across my abdomen(normally just my right side with AF and it usually feels like it’s killing me but this didn’t). Sorry for the long post!! Just need help I have nobody to talk to. Thank you!!