Cramping and spotting a week after intercourse

Tawny • Two babies in heaven. 👼🏻 Alaric and 👼🏻 Hope. Lucille our beautiful 🌈 👶🏻 was born on 9/7/2018.
Has anyone else experienced light spotting and mild cramping a week after the 1st day of intercourse? I don't want to give my hopes up, but would this be implantation?