You are in control of telling people about your stoma
It's not uncommon to worry about how you will tell people you have a stoma and how they might react. However, it's important to remember that you are in control of who knows about your stoma. Whilst you may feel like everybody can tell you now have a stoma, it's very likely that they can't so there is no pressure at all to let anybody know unless you want to.
It's often easiest to start by only telling people that you trust (EG your closest friends and family). Make sure they understand that this is very personal information to you and that they should not tell other people about it without your permission.
You might not even want to tell anybody else and that's absolutely fine, too – if you have been ill for a long time, you could tell most people that you have had an operation and are now feeling much better, which is all the information that they need.