Is light brown discharge at 2-3 weeks normal?

Hi ladies, hoping to get some opinions and shared thoughts. I've only found out I'm 2-3 weeks pregnant this week (yay!), but have started to get light brown coloured discharge as of yesterday and today (boo). What is this telling me and should I be worried?

I had a miscarriage earlier this year and that started with brown discharge too but at 7 weeks.

I also know bleeding and brown discharge can be normal, but how can you know the difference? Thanks xx