What Causes Clear Vaginal Discharge,bloating Of Stomach And Nausea?

hi.. im 26 and have pcos for some years i guess but only detected now. i was on birth control pills for some time and now ttc. my gyn gave me duphaston for periods and metformin and pre natal to help concieve. my periods were due on 11th. i have clear discharge, bloated abdomen. my diarhhea which started with metformin changed to constipation and feel nauseatic. could i be pregnant? im 65 kgs and 5'6''