Pregnant No cramping, no bleeding. Did implantation occur?

La

Hi ladies! So I got several positive pregnancy test, but never experienced any symptoms of implantation. I know that if implantation dosent occur then it could result in a chemical pregnancy. I'm not trying to freak myself out or anything, but Did any of you not have any signs of implantation, but still are further along? My period is due Sunday but still no symptoms. I just had a headache for a week and I don't normally get headaches.