HELP!

Hi ladies, so this morning I took a test and it came up like this. So obviously it’s a positive 😍 BUT.... my sister took a test with the same test a few months ago and she had a false negative with the same brand. It came up positive on hers but she wasn’t actually pregnant.

The thing is tho she was leaving her test well after 10 minutes and it would come up with a positive where as mine came up with a positive straight away.

What do I do? Take another test from a different brand or?