Brown Discharge

Kaka pa I.E ko lang po kahapon and sabi ni doc closed pa daw po cervix ko pero malambot na. Pag uwi namin ng bandang hapon, everytime na umiihi ako may sumasamang brown discharge pag nag pupunas. No pain. 37 weeks and 5 days preggy. Nag pm na ko kay ob but still no reply? Is it normal since kabwanan na po?