How much spotting is normal after getting the implant?

Hey ladies, I got the Nexplanon implant about 6 weeks ago. I’ve been spotting every day since my last period (1 week ago) but haven’t thought much of it because it was pretty light and I was told there would be spotting. However, the last two days I’ve been spotting a lot almost like it’s a light flow on my period, but instead of it coming out red it’s coming out brown. Is this normal??