6 DPO. Light period like cramps

I'm 6 dpo and am on cd18. Last 2 days I've had random slight pinching in lower right side and today I have what feels like on and off very light cramping that I normally get the day before my period starts. I'm very regular 27 day cycle and am suppose to start af may 5th. Has anyone else experienced implantation pinches or cramping and received a bfp. Or is anyone in their 2ww experiencing anything like this ?