Should I speak up?(age15)

At age 9 I was diagnosed with depression and anxiety and went to countsellors for years the last time being 3 years ago.Around December-May last year I was very depressed and suicidal I self harmed but no body knew,no one found out,I’ve told no one.I went to the doctor a couple months ago about my anxiety but that’s it.Should I continue to keep this to myself now that I’ve got through that hard time or tell someone I just can’t see what that would do and don’t want to worry anyone?

I’m doing fine now btw I still suffer with anxiety and the one odd sad night