6 days post ovulation cd 18

KC
I have had cramping all day long. I really feel like I am about to start my period. My cycles are normally 30 days. Based off cm I ovulated early this month. I don't want to get my hopes up but could this be implantation? I conceived my son in January so I am hoping it is my month for baby #2. My first wasn't planned so I wasn't symptom spotting.