Just got pregnant and some dirty things are flowing from the vagina, what's going on?

Patient's question:

Just over a month pregnant, it was normal before. But in the past two days, I've noticed a lot of dirty stuff in my underwear. I don't know what's going on? Is it serious? Will it affect the fetus? Urgently

Doctor's answer:

Hello, based on the above situation, you may have vaginitis or threatened miscarriage. Advice: Hello, it is best for you to go to the gynecology department of the hospital for an examination, identify the cause and take medication accordingly. Good luck.