Implantation bleeding

Sarah • 25. Married, bi, cat lady, feminist, currently pregnant with pregnancy #3 💕✌ Due Oct 4th 2019 with my rainbow, Erick Trevor 💞
My fiancée and I had sex last night and I am half way through my cycle (about two days from ovulation) I started some spotting this morning and have never done that unless I am getting my period. Does implantation bleeding happen that fast?