Whyyy???

So I’m one day late according to my other app and 3 days late on this app and another app says I don’t start till the 22nd . My app that says I’m one day late is the one I follow the most because it’s always been right. I just took a test because I took a nap and I haven’t peed since 12 . I feel like I saw a line but I have a feeling my eyes are messing with me because my ovulation day was the 7th of December so I think it would of shown up if I was pregnant right? I’m loosing hope because it only took me 3 months to get pregnant with my first son . And now it’s been almost 7 . With my first son my cervix Tour but the doctors said everything is fine and I could get pregnant when I want another baby. I pray my period doesn’t come😂 but we will see