Ovulation/implantation bleeding

Christie
First time posting here 😁 (idk all the acronyms) my period ended on the 9th and I had sex a couple times during my window which was the 12-18. A couple of those days I experienced mild cramping and pink tinged toilet paper when I wiped. Could it be ovulation or implantation? Mind you it was only like a pink stain and only occurred during that bathroom trip. We've been TTC for over a year now since miscarriage so my fingers are crossed