Hmm... usually the wife is the one who has the baby... but hey, whatever works for you. So long as you don't mind the extreme cramps.
My daughter frequently goes into my Transformers room and it's not a problem. She respects the toys and never touches them. She likes pointing at them and going "Da!!" - but she won't touch them unless I give one to her (I usually let her play with my PlaySkool Transformers).
My TF room door already has a lock, as it's a legal requirement under NSW law for any owners of gun Transformers anyway. :/