I need some help here

Tam

So I brought a pack of clearblue early detection I use a test and come up like this the first picture is mine the second picture is my sisters so I wanted to try something you can say it is wrong or not I pulled apart and clearblue pregnancy test not use and just took out the test part I use that and it was a negative 👎 could you still get reading like that or not but any way I use my sisters pee to make sure it’s wasn’ta evap line on my I know my sisters would be negative because she hasn’t had sex and she 22 years old and good on her to waiting till she meets the one