Brown discharge after ie in my third trimester.

Mga mhiee...pahelp po. I'm so worried po about my jelly brown discharge.😥 2days ago kasi IE ako three times, 2 after ng ultrasound ko at isa sa ER. I'm only 36 weeks and 5 days now. Ob told me anytime pwede na daw po ko manganak kasi thin na daw cervix ko and sa pag ie sakin😞. Is this a normal thing in my case? Thanks po sa sasagot.