PLEASE COMMENT!!!

So this morning I was at work and did a test and I got a positive with 2 lines. They appeared straight away, i just got home and done another one with my partner and it says negative! I'm so confused. The picture on the bottom is the one done this morning. It is faded and has been left several hours but as soon as i peed on the stick I got the two lines. And the top one is the one I've just done, please help me!