Implantation signs?

Ch

So I am 10 DPO and have a very regular cycle. Had light cramping and pelvic pains over last couple days, and a light spotting this morning. I’ve notice fuller boobs and being tired but didn’t think much of it until I checked out implantation symptoms. My period is due in 4 days and don’t usually experience PMS this early.

What do you ladies think? Could it be implantation and when is the earliest I can test?

Thanks!