Could this be faulty?

Q

Could someone please give me some insight? I took a HCG test and this is what I got. As you can see, the negative line is there but there’s some spotty color where the positive line should appear. According to the <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> I’m 11DPO. Should I go buy a pregnancy test to confirm that way?

Thank you