Is this positive? Top one taken last week and bottom one taken this morning

So confused! Had a miscarriage 5 weeks ago. Took a pregnancy test about a week ago to make sure HCG was out of my system and it looked negative. Took another one today just to make sure again (bottom one) and I see a faint line. Thoughts? I thought I ovulated earlier this week so I’m very confused. BBT is elevated as well.