Help!

I’m hoping someone can help me. I used this app when I was pregnant with my boy who is now 10 months old! I found it so helpful! So I’ve just logged back on!

Merry Christmas by the way!! 💫

So.... it’s a complete shock but I’ve been having back ache for days and for some reason decided to take a pregnancy test this morning....it’s come up pregnant 1-2. My baby isn’t even 1 yet! I’ve told my partner I don’t think it’s right as it says pee on it for 5 seconds and I peed for 2 seconds 😂(think I have a water infection) it came up after a few minutes that’s why I think it’s wrong...I am due on but haven’t come on yet, I feel like I have flu like symptoms today, body Aches, feel sick, feel like I have a water infection...the question is can anything make a false positive like a water infection? I’m doing a second one on my next wee! 😲😲😲😲