Could My Missed Period With Breast Swelling And Cramps After Taking Duphaston Be Due To Pregnancy Or PCOS?

hi. i suffer from PCOS. I took Duphaston pills on January 16-25 of my period. On March 6, I had unprotected sex during menstruation, on the third day, without my partner ejaculating. Between March 21 and 28, I took Duphaston. Two weeks have passed and menstruation has not yet occurred. I have swollen breasts and occasionally cramps. What happens? Always after duphaston menstruation occurred 3 days after the end of treatment. Could it be a pregnancy? I am very stressed about this situation. please help