Is this a positive or negative test ?

On Sunday I decided to buy a pregnancy test due to being three days late on my period. At first I didn’t think of it as anything bc everything felt so normal, but still wondering why my period late. When I did take the test this was the result I got, a faint line. I’m five days late today, I told my sister about it and she thinks I should wait another week. Should I take another one to be sure. I don’t want to waste money I don’t have on test if I’m not 😩 I’ve had false alarm before and it was a waste of my money. Idk what to do. I feel okay other than feeling cold out of nowhere, even in room temperature area.