Please help!!

Okay so I was having weird dark brown blood last week. On Monday I tested (I was a day late) and the clear blue tests show clearly I’m pregnant. So then I was a bit worried that maybe that was like a chemical pregnancy and hormones were still in my body and yada yada... (I think I’m just being paranoid) so then today (friday) I went to the dollar store and got the $1 assured brand... it still reads positive but the line is a LOT lighter! Does this mean I actually did have a chemical pregnancy and lost it and it’s hormones or am I actually pregnant??? I still haven’t gotten my period and I know their different brands of tests... my husband and I have been trying for awhile and I just don’t want to get our hopes up... tia!!!