Dogma can not be changed.  I don’t know where in the world you got that notion, but you are quite clearly wrong.  No, one may not consider “any” teaching of the Church to be dogmatic.  That is just simply false. Let’s put it to a test.  The dogma of the Holy Trinity is a de fide dogma.  De fide dogmata have the highest level of theological certitude.  So, you are suggesting that the Church can change the truth that God is a triune God - one God in three Persons; Father, Son, and Holy Ghost.  Is that right?  I mean, if a dogma can be changed, as you wrongly posit, then ANY dogma can change, right?  The Church could change the dogma of the divinity of Christ too, eh?
Clearly you do not understand what a dogma is.  Yet you think you’re called to be a priestess?
Answer me this Nora, what makes Ineffabilis Deus a dogmatic decree?  (That’s the papal bull with the ex cathedra decree concerning the Immaculate Conception).  What makes it a dogmatic decree over Cantate Domino?