Discharge @ 17 weeks

Hi All,

I woke up to some brownish stringy discharge today which has scared the life out of me. Its been about 9 hours now since I got up and its been on and off all day. A tiny bit on my underwear but mostly just when I wipe. I went to the emergency dept to get it checked out where the did a bedside ultrasound. Baby was moving and they could see a heartbeat. Just sent me home and said to monitor and if it gets worse or cramping starts to come back. Has anyone experienced this? I’m so scared. 🥺