AF is due in 5 days. I have a regular 25-26 day cycle. Today I've started to get mild cramping on my lower left side. It's not painful; however, it is noticeable enough for me wonder if this could be implantation cramps. I have no other symptoms aside from feeling very tired. Can anyone tell me if they had implantation cramps and if they were specific to one side days before their expected period??