What is going on?!

This is my third day having this brown blood/discharge?!

I’ve stopped having some of my pregnancy symptoms but feeling a bit nauseous in the mornings/afternoon.

I didn’t have this with my last pregnancy I called my OB and she just told me to monitor it and if it turns bright red with clots to go to the ER but I’ve also seen other posts where this is not a good sign?! Can anyone give me some advice or I put?!