Lynda,
Since I am a male, my change in wardrobe may not apply to your situation.
I choose to wear a two-piece pouch and bag. I like to take the bag off while I shower which I can’t with the one-piece.
Since my stormo is just below my belt line, I had to go away from wearing a belt. The belt would catch on the bag and pop the bag off the pouch (two piece bags are connected to the pouch like a Tupperware lid connects to the bowl).
So, now I wear suspenders.
The only other restriction is when I wear tighter fitting pants and I need to drive for some distance. As the bag fills, the tight pants restrict the bag from filling to the level I allow it to during everyday wear. All I do is unbutton my pant’s button and unzip my zipper and it "frees" my bag against the restriction.
I wear the same swimming suit as I did before. The swim suit band lies above the bag and pouch. I was planning on changing bathing suit styles to a bikini Speedo, but decided that bag exposure may make sun bathers run.
Good luck in your choice, surgery and recovery.
Rick