HRT and breast cancer

I had ovaries removed at about 48yo and was thrown straight into full on menopause and could not cope at all, was then put  on a fairly strong dose of HRT for 4.5 years then diagnosed with BC.  My surgeon and Onc say that the HRT had nothing to do with it but weirdly my GP said the opposite her comment was “every day I take HRT I am just feeding the cancer”.