Hi,

Well definitely not the best situation! I can completely understand how annoying that must be and I don't agree with her behaviour but as you said it is her house which limits your options

1. You could be completely honest and see her reaction (she may understand and leave you to change the room, or maybe you could work together - she is maybe just very excited and wants to help and doesn't realise it's annoying to you?)

2. You could move out (If you can afford to it might be the best option having a new baby is hard and you have to create your own structure which would be hard in someone elses house, also have you ever lived alone with dp? might help your relationship) If you think you can't afford it look into centerlink, you might be eligible for rent assistance etc on top of parenting payment once bubs is born. If you don't work you may also be eligible for new start allowance depending on dp's wage - you wouldn't have to actively look for work due to being so preg to receive this

3. Do nothing and put up with it.

Maybe none are the best but still they are our options as far as I can see. Hope that helps