Pregnancy test

So my period was 2 days late today and I got a dollar store pregancy test and it came back positve . I thought this line was sort of faint so I got a digital and it said pregnant . My question is what does it mean if you have a faint positive even 2 days after you missed your period ? Is it a sign that my HCG levels are too low and I I could be losing the baby ? Or is this normal ?