Mucus Plug

Ay, that does sound like it could be your mucus plug, especially with the brown discharge, a lot of us moms experienced the same thing towards the end! Since you're already 37 weeks and 6 days, you're technically at full term na, which is good, but I'd really suggest calling your OB right away or texting your midwife to describe it exactly as you told me, kasi they know your case better and can check if there's anything else they need to monitor. Laboring soon na siguro, but better safe than sorry, keep an eye on contractions or any other changes, at if may bleeding or severe pain, go straight to the hospital na!