Confuse when to go KKH

Im week 36 day 2. Nowadays i can feel dull pain at my back and pelvic every night. Not sure if its really contraction or BH. I dnt want to waste a trip to KKH. The pain will come and go especially at night. Still bearable but can i know.. is it time to go doc or wait. And i do notice discharge mucus like in my urine. Pls help.. #pleasehelp #1stimemom