So i had a misscarage back in December 2017, got on the birth control shot January 2018 and got off is April 2018... my period came back to normal on September 2018

Note!

•my period usually last 5 days

•on September 30 my bf came inside of me, ovulation was in 2 days..

•my October period only last from the 16th-18th

•my period is usually heavy but this time it was different, 16:flow was medium, 17:flow was light, 18:was only spotting, 19:spotting very very little bit

•i have had chest tightness and hot flashes lately

Heres my question:

◇Could this be implantation!?

◇Is implantation only supposed to occur before you predicted period or can it happen after?

◇For how long is implantation suppose to last?

I will be so thankful for any questions answered❤