TMI but worried

Ashley • ❤️🧔‍♂️👩🏼2x👧2x👦TTC#5(5x👼)❤️
I have been having bouts of dizziness on occasion (not sure if related but in case) but I went to the dr for my glucose test today... I told him about how I had been having a really dark brown (tmi) discharge that's almost watery that is enough to leak out of my liner onto my underwear. He put me on restriction and did some cultures but didn't really tell me anything. What could this be???