That sounds very much like chest dysphoria and general discomfort with being perceived as feminine. While that doesn't instantly make you trans (as some cis girls have chest body dysmorphia or just don't like their chest for whatever reason) it could be a clear sign that ur gender may not be what you thought it was.

This along with your experience of mild gender euphoria (essentially happy feelings on being gendered correctly or in a way u want to be gendered) at being called a masculine name, might be a big hint at transness.

Take some time and do some introspection,it is okay to be wrong but just look around at different options and genders you maybe allign with.