We are all different. It is up to you whether you wish to show or hide your ostomy. If you prefer not to unveil your stoma in public places, it does not mean that you are ashamed of it. And if you feel absolutely comfortable letting others see your stoma bag, good for you. Everybody has the right to do whatever makes them feel comfortable. Because everyone is different and no one should be judged. Thus, choose what works best for you.
The choice of your swimwear plays an important role in how secure and confident you feel. This does not necessarily mean that you need to purchase special swimwear for people with an ostomy. Just check how well the bathing suit or swim trunk helps to hide your ostomy and look for a swimsuit which holds your stoma bag firmly to your body. This might give you more security, i.e. the feeling that everything is “in place”.