Anyone else had pinching sensation before BFP?

Ash || Mummy to triplet boys 🩵

Hey guys I’m about a week away from getting Aunt Flo & im having pinching pains in my uterus, mainly the left side. Yesterday I had pink streak of blood in a clump of clear CM, could this be cramps after implantation? I’m not sure what DPO I am as I ran out of OPK sticks this month.

Thank you in advance Xx