Ay, that brownish sticky discharge could definitely be your mucus plug, mama! I'd suggest taking a pic or describing it more to your OB next check-up or kahit mag-call na lang kayo to be sure, some of us mums waited for contractions after ours, while iba ay naghintay pa ng ilang days, so walang exact timeline talaga. Keep an eye out for regular contractions or if may more discharge or bleeding, then that's the time to head to the hospital na. Stay safe and enjoy these final days, you're almost there na!