Telling the "world"

I have not told the "world" about my cancer- I have not posted anything on social media, or even come out to tell people other than family, close friends, work related personnel. I found out in November I have stage 1 aggressive ER+PR+HER2+ Breast Cancer.  I started  treatment after Christmas last year and have completed 4 rounds of TCHP already, with 2 more to go. I am also renting Penguin Cold Caps to save my hair. My hair has been my security blanket my whole life, as I was always shy and insecure. I knew that taking my hair from me would open a world of more insecurities, including having to explain all this to my 2 young children who would not understand. I am extremely grateful that the Cold Caps have saved much of my hair already so that no one knows what I'm going thru, especially my children. However, I will be having a double mastectomy in a few months so summertime will be a struggle, on top of being a mom and a wife. I have an army of people behind me supporting me. I am also extremely grateful for that. A part of me is still scared. I'm still scared of telling people and what they will think of me. If I tell the world will they forever think of me being "sick", that poor girl, not know how to approach me or talk to me because they don't know what to say?, treat me differently in the long run. Has anyone else struggled with this? Id love some advice on going forward. I know that I don't HAVE to tell anyone. But there is another part of me that wants to tell my story. What if I could help someone going thru this like the others who have helped me. I'm so mentally torn on being open about all this. Am I still in denial?