Good Morning L., I understand how you feel. I have very long hair and I am 57 yr old. I wanted it long ONE more time before (in my mind anyway) I was to old to have long hair.
Play with the style, fluff it, crunch it. OH yea I was a hairstylist for many years too. :)) You can use side combs, go have highlights put in it, it's so much easier to change colors with shorter hair. Can always remove the color if it's not you. But since the cut is new it's just going to take time to really enjoy it. Some may not comment as they just don't know how you feel about it. Some might be able to see you just don't like it and won't comment.
When we get so used to a certain thing it is SO hard to get used to something new. It's why a lot of people buy the same make & model of Car's, trucks, appliances, makeup...etc
We don't want change, its tried and true and we like it that way.
Your hair will grow back L., but in the mean time HAVE fun with it. Your hair is only a part of who you are appearance wise, it's inside that Shows forth the person you are.
God Bless
K. Nana of 5
PS you could always have extensions put in :)