Light brown discharge 4 weeks pregnant

I’m 4 weeks and 3 days pregnant today earlier when I wiped I noticed a little bit of brown discharge. I haven’t been cramping much. I’ll get a random twinge or cramp here and there but that’s it. I had my hcg done on Tuesday it was 257 yesterday it was 887. I’m freaking out. I had a chemical pregnancy before my daughter and now I’m so obsessed with watching my symptoms and checking for bleeding. Anyone experienced this before and everything was okay 😔