Wondering if it’s implantation bleeding?

My husband and I aren’t trying yet. But we had unprotected intercourse on the 26th when I was supposedly ovulating accounting to the app. A couple days later I had spotting which was the day I was ovulating so made sense.

Last night and this morning I have had some sharp kind of cramps (different from my period cramps) in the middle of my uterus, along with a little bit of light pink spotting.

My period isn’t due for another week and a bit. Is there any chance this could be implantation? I normally don’t spot mid cycle except for when I’m ovulating which has passed.

Even though we aren’t trying yet I would be over the moon if we fell pregnant but not trying to get my hopes up about anything.