Not sure what to believe

Sierra

Okay so I had a MC back in March and two days ago I took a First Response and it popped up super positive. Which I was really excited for. The next day I did the same and they still look positive but they are fading 🤔 The very first test I took it was morning pee and I took two Clearblue digital tests this morning, showed not pregnant but I opened them up and can see two lines. Has this happened to anyone else before? I could really use some advice. Hoping we finally got our rainbow baby 😍