Talk to Gynecologist on Pregnancy Discharge

Hi. I am 19 weeks pregnant. I was on HCG 1000iu injection weekly and pogestrone tables vaginally regularly for last two months. I visited my doctor on 23rd of this month and everything seemed normal so she stopped these 2 medicines. The problem might not be linked to this but since yesterday i am having very sticky white discharge in huge amount when i sit or stand for even a little time. The discharge us very thick it dosent flow but sticks to my legs and i feel very weak after that. Is this normal at 19 weeks? I am also facing back pain from a week. I feel extremely exhausted and out of breath at times. Its hard to get out of bed. Even sitting makes me tired and breathless at times. I am taking duphaston. Iron calcium and prenatals.