Hello Reena,
It is not necessary for you to do so.I guess you'll be completing first year by June of this year. Rather you can pursue both at the same time but from 2 different universities. If you are doing MA from a regular college then you can opt for B.ed from IGNOU. 
And actually you can't pause your MA in middle and start B.ed from same university if you are a regular student. You have to completely quit it to start B.ed.
Also, as per your tags if you are pursuing MA from IGNOU then definetly you can do so, as minimum period is 2 years and maximum 5 years to complete MA. Rest you can have a talk with regional office about the re-registration and all other formalities.

I hope this helps you.
For any other query mention it in comment.

Thank You.