Mama, I'd really encourage you to message or call your OB about this right away, brown discharge after IE (internal examination) during pregnancy kailangan i-check agad, especially at 28 weeks. Better safe than sorry talaga! A few of my mum friends had similar concerns din, at ang doctors nila nag-explain ng what's normal vs what needs attention, so definitely reach out to yours ASAP para ma-ease your mind. Sending you hugs!