When can we expect spotting? Is it around the time we conceived or is it at the time when we expect our period or few weeks after the missed period? Could someone tell me exactly when it happens? How does it look like? Can it happen before we get a positive home pregnancy test?

What spotting are you talking about?

I have heard about "spotting" is an early sign of pregnancy.I just wanted to know when it happens..

That is not a sign of pregnancy. Implantation bleeding has not been scientifically proven.

Think about it... something as small as this period ( . ), or smaller, implanting into your uterus causing bleeding, it's just not going to happen.

Please read this link... https://www.askmehelpdesk.com/womens-health/info-answers-frequently-asked-questions-our-health-expert-53865.html

So, please, don't "expect" this as a sign of pregnancy as it is NOT a sign of pregnancy.

Thank you.. helped me a lot!