Pregnancy test confusion!

Sarah • Married, 37, 12 year old daughter, one angel baby, son 7 years old, and a baby boy 6 months
Pregnancy tests are so confusing!! This happened to me last time too!! I took a cheapie & it's super light. Hard to tell in a pic. But I take a digital & it's positive! Why does it do that? I know it'll get darker in days to come but it's still annoying.