Wiped pink

When I wiped after peeing, I got bright pink EWCM. Now that I'm wiping to check, each time it comes out a light brown color and it's just normal thick CM. I'm not bleeding at all so I'm kind of scared it was implantation bleeding. I have cramps also. What could this be!? My period is in 4 days! 
Update: this has been coming out of me.