Hi Chrissy,
I have an amoena silicon prosthesis too. It's great- am more comfortable with it on than not.I have various styles of amoena bras and they are comfy too. I sewed a pocket inside my swimsuit and just insert a soft breast form.It's not like I swim alot so it does the job.I had a fantastic lady who fitted me and it was about 6weeks after surgery. I think you have to find the right bra then the prosthesis will sit well.I think there is a very limited range to choose from.I got all mine at Myers.Good luck.
Tonya xx