Ah mama, at 37 weeks and 3 days that's definitely something to check with your OB right away, ha, brown discharge can mean different things at this stage, and you need your doctor to make sure everything's okay with you and baby. Call your clinic or go to the hospital kung hindi ka makakontact agad, better safe than sorry, lalo na malapit na due date mo! Keep track rin ng anumang iba pang changes you notice, para maayos mong sabihin sa doctor. You've got this, mama!