Pregnant 8 weeks pp & Breastfeeding

How did you know you were pregnant while breastfeeding? Haven’t had my first period yet.

Did you have spotting ?

Did you have period like cramps?

Breast pain / sensitive nipples?

Took a pregnancy test and it has a faint line. Line isn’t getting darker so I Don’t know for sure If I’m pregnant. Could be left over HCG.

What were your symptoms?