Another instance of spotting :(

RL

I had some light brown spotting 2 weeks ago the day before my period was due, it only happened once then cleared up. But just now I noticed I'm spotting light brown again and I've got very slight cramps! Im 5 weeks 4 days. I've got an early scan on fri 8th because of the first lot of spotting. I'm a bit worried :( can anyone reassure me?