Mama, please get this checked by your OB as soon as possible, brown discharge in the third trimester needs to be assessed right away, kahit palit-palit lang siya or walang pain. Better to be safe, lalo na at 32 weeks ka na! A few of my mum friends had similar experiences and iba-iba ang reasons, pero lahat sila napakabuti ng OB nila, don't worry, it's probably something minor, but only your doctor can tell for sure. Samahan ka ba ng partner mo sa clinic kaya you'll feel less anxious? Let us know how it goes, sis!