Swelling of the hands or feet is a possible side effect of Nifedipine
. The swelling of face and hands that you see after waking up is physiological and not to be worried about. You should get regular examinations for maintenance of blood pressure and fetal well-being. The discharge, if definitely coming from the vagina, could be due to leakage of membranes. At home, you can test for the presence of leakage by using Nitrazine papers which turn blue-green, blue-grey, deep blue or black with leakage of amniotic fluid
. You should report to your obstetrician as soon as possible. Stay in bed, monitor the baby's movements and follow your doctor's instructions. Wish you a safe delivery.