My lines aren’t progressing

Danielle👦🏼👧🏽👼👼👼🤰🏻

So I should be around four weeks today and I have gotten positive pregnancy tests but my lines from two days ago till now aren’t progressing. I have also been cramping consistently on my left side into my hip and butt cheek down my leg since last night. I just had a miscarriage in the beginning of April and didn’t even expect to get pregnant again this month. I am so scared of the same outcome. I just want my rainbow baby.