Can i conceive while taking duphaston.

Hi, Im Anusha, i have pcod.. Doctor suggested to take surema XT from the first day of period and asked me to take duphaston 10mg from 15th day of period.. We are planning for pregnancy. I had my period in April 5th and I checked my fertile window and it showed april 15-20, I started using duphaston from 20th April and I'm feeling dull abdominal pain, sometimes it is in both sides it will be for few minutes and it stops. I had a cervical discharge with clear and stretchy layer on 20th and yesterday it was some thick and today It was clear stretchy with dull abdominal pain and also feeling mild headache. What is this symptoms, does duphaston prevengs getting pregnancy or am I ovulating. I'm confused and feeling stressful Please help clear my doubts.