Help, am I pregnant?

I’m confused on whether I’m pregnant or not. I did a pregnancy test and it was positive but faint I decides to test a couple of days later and it was still faint. The day after I tested with another brand and it was negative. After that I didn’t test any more. This was like 2 weeks ago. I’m still breastfeeding and didn’t get my period yet so ofcourse I wouldn’t know if I tested to early for the other one to be positive. They say a line is a line right?

Have been having “period” like cramps 2 weeks ago.