Implantation bleeding.

Kim

Hi everyone. Yesterday I went to use the bathroom and I didn’t take a picture but on the toilet paper it was light pink. This happened 3 different times. I have been cramping, random tingling in my leg for about two minutes yesterday, and lower back ache. I tested and it was negative. When should I test again because this morning there was nothing when I wiped. Picture of my calendar. Could it be implantation bleeding?