Hi @Lillian67, great to hear you are home. I hope you're feeling ok.
I have found post surgical bras at MYER, Big W and David Jones had a small range and Target had a few. I was given a list of suppliers when I was in hospital which helped. There are quite a few online sites too it can be but hard to judge the sizing. I've also been getting Amoena emails about their bras. They have pj's with built in bras.
I have been wearing a post surgical bra since my last surgery which does up at the front. It looks like a crop top and comes in black, white and cream. I bought mine from MYER for $30 each ($40 from David Jones I think).
When I had a mastectomy I wore a soft form for a while because the scar was quite sensitive. I also had a proper prosthesis ready to go, but it was quite heavy. There are lightweight ones available.
I also had lovely bras which didn't have an underwire. I have just donated them to a breast cancer charity otherwise I would have given you the name of them. I bought them through a bra fitter who came to my house when I bought a prosthesis. They were a bit stylish with padding - great t-shirt bras.
I have a number of the Berlei ones but have found them a bit less comfortable as I had a DD/E cup. In fact, just bought a C cup one due to swelling from surgery and they are still uncomfortable. I was given them in a pack. I noticed Berlei gave lovely lacy ones in their Bonds outlet stores but they do up at the back. They are lovely, but haven't tried them on.
Target have some cheaper post-surgical bras but I'm not sure that I like them that much.
The one that I have tried at Big W was lovely, with black lace and was quite cheap. I have bought heaps of bras over the past 2 1/2 years looking for the perfect one. Now I have a B cup. I still look for larger bras so it's weird to be looking for a smaller cup size. Let me know if I can give you any other info. As a D cup you will have a bit more choice than I did. Just realised I've repeated some of what @Unicornkisses has said. x