Brown Discharge at 7 weeks and We are worried 😢

Hello people out there,

My wife is almost 7 weeks and a day more and sees a very little brown discharge today as conveyed by her.

Is there anything to worry? We are visiting doctor this evening immediately to see if something is wrong.

But before that I wanted to if that harms or adverse problems as such. We are really worried at this moment. I read already that this can happen due to low progesterone levels sometime. Could someone explain if that's true and nothing to be worried. Thanks a lot for your responses in advance.