Stomach cramping help

So I’m 5dpo (I know superrr early I’ve got 4 kids so not my first rodeo) and my stomach is cramping like a stomach bug would ache, but no toilet troubles apart from a going a bit more but not a stomach bug if that makes sense. I’ve never actually tried to get pregnant so no idea what implantation is like, could this be it?

I have stage 4 endo diagnosed last year, it’s not pain off that either this is different. Could it be implantation? Fingers crossed 🤞🏼