Confused

Hi guys I have a question which I have been wondering for quite some time now and after watching today's episode I m even more confused ... I missed a few episodes in the start and the middle ... is durdhara carting chandras child ? ... he refused helenas advances ... how's durdhara pregnant

I didn't watch during that time, but my dad told me Acharya wanted Chandra to secure the heir of the throne. So Chandra went with Durdhara since he's most comfortable with her.

Thank you so much for clearing my confusion