Pregnancy test help

Gisela

Goodmorning moms. My last cycle was last month on the 10th so i am pretty late and i took a couple of test and last week friday morning i took a test a totally forgot about. I went to my doctors to get a test done there which is it was negative but when i got hom i checked the test and it looked positive but the line look so thin when usually is a thick line. Help can someone tell if this is like maybe a defective test?