Uy, first-time mom! Any spotting or staining during pregnancy needs a doctor's check-up talaga, pls don't wait, contact your OB or go to the nearest clinic/hospital para ma-assess properly, okay? Brown stains can mean different things at different stages, and only your doctor can tell you what's happening sa iyong case. Stay calm muna, and let your doctor do the checking, yan ang best thing to do ngayon. Hugs!