Anyone know how soon you can experience implantation

I’m currently 7 DPO if I even ovulated, I had sex this morning and after noticed some bleeding after sex. Obviously it’s still too soon to test, I’m not having any pregnancy symptoms. Besides feeling hungry but I’m always feeling extra hungry right before my period starts so it could very well just be my period. Definitely not cramping like a period. I know implantation is less common but I’m curious if anyone else had experienced Implantation, and is it too soon? My last period was January 4th- 7th