brown discharge can be old blood. I would call your doctor to check and make sure everything is ok. Anytime theres oder theres a chance of infection that can only be determined by your doctor. Increase of discharge is very common in later pregnancy as well. I would give the doc a ring they might want to run some test just to make sure everything is ok.
I am a ftm and have not had this, but this is why I ike these forums, it helps me learn from other people. So I googled your question, the best I could find was pretty vague, as it can be lots of things. For example if it has the consistency of snot it could beyour mucus plug, if its really bad smelling it could be an infection. The bst thing to do is call your doctor, as it can also in some cases be a sign of labor. If you do call your doctor maybe update? I am curious now to know as well, in case I get this.
Idk but your doctor should be able to prescribe something for it oh I think its called bacteria vaginosis