So we did a thing and I need your help

Me and my husband just bought a three bedroom one bath house. The master bedroom will be mine and my husband and the next size down will be my 5 year old daughter's and my almost 2 year old daughter's room. The third room I wanted to make into a toy room for the girls but now that I'm pregnant with our third I was thinking of making it a nursery and when my oldest gets old enough to give her the room and then move my two Littles into one room.

What sounds better playroom or nursery for now, or something totally different. Please give me your opinions