I had implantation bleeding. It was one big drop of blood. Two days after BDing is early to have implantation bleeding.
so you had sex on thursday and the following saturday you had spotting..so within 3 days? If this is correct, then no this wouldn't be implantation spotting. For the fetilized egg to implant in your uteris takes anywhere from 7-11 days. Implantation spotting is usually brown in color or light pink, but it happens right around when a women is expecting her period. If you are talking about the saturday a week after having sex on thursday, then yes it may be. I had implantation spotting for my first pregnancy. ( ended in m/c) and I'm not sure if I'm having it irght now either. The ifrst time it was brwon, then light pink, never enough to fill a pantyliner, but I thought I got my period. Then it just went away after about 4 days. At that point I knew something was up. Right now I am brown spoitting for about 5 days, my temp. have remained high, ( I'm BBT Charting) but only about 12 dpo and tests are still negative. It may just mean AF is coming.
Good luck