Implantation cramps

I know every woman is different but I'm just looking to see what everyone else experienced.

I've been having a pulling kind of cramp for nearly a week, it comes and goes and isn't overly painful. The last two days I've had more like period cramps but not as often as I would before I get my period (it's 5 days late). I've had a lot of discharge too and woke up this morning feeling sick.

Completely new to all of this so any guidance would be appreciated.

PS: taking a test Wednesday morning if still not got period.