Bleeding 11dpo, implantation or period?

So I’m 11 dpo and I’m woken up early hours and wiped and it’s very very slight pinkish blood on the paper (hardly noticeable) is this possible to be implantation or my period. I was going to test with a first response this morning with fmu but not sure whether to bother now :(

I’ve never had implantation bleeding with other pregnancies before either..

I’ve had constant cramps in my tww, nausea ect and I took a test at 9dpo and negative