Please help to stop me going crazy!

So I've had my BFP, but I've also had mad stomach cramps, so I had an early scan the other day which showed a cyst on my ovary (nothing new, I get them a lot). I'm having a blood test later today to check my beta hcg to see if it's improved from Thursday. But because they mentioned it could be a failed pregnancy or ectopic, I'm worrying! I've done a test yesterday, which was a strong line, and again this morning, and the line is really faint.

Does that mean that my levels are dropping? Or does it not mean anything?

Sorry for the long post but I'm driving myself crazy! Any help would be greatly appreciated!