Hello, I would be happy to help you.
So you are describing a prior 21 week loss, and I presume a first trimester loss. I am very sorry to hear this. BV is very common and is not necessarily thought to be a threat to pregnancy
, but in your case, I am glad that they chose to treat the infection.
With regard to the discharge it is either related to the Metrogel
itself, OR the infection is not responding to the treatment. Given the lack of bleeding (and I presume the lack of pain), then I would not be too concerned.
Call you doctor in the morning and get in to be seen. I hope this helps and good luck!