New diagnosis- what does this mean?

I just think it means that the oestrogen in your body feeds the cancer. They will likely offer you oestrogen blockers such as Letrazol or similar to help reduce oestrogen production. I hope all goes well. I too am on oestrogen blockers after two surgeries and coming to terms with the effects thet can have. I hear from people on here that tgere are different oestrogen blockers. Sending love

Thank you so much for replying and sending love.

I am already on Letrozole from last year but with this Progesterone negative I really don't know what this means, it was not mentioned when I met with the Consultant so I  don't understand the implications 

I will have to phone my BCN 

Thank you again x

Not a lot is mentioned about the role progesterone plays in cancer. Oestrogen ( or Estrogen in USA ) is a female hormone which plays a part in menstruation & pregnancy. Oestrogen is the main hormone in hormone related cancers. Mine was reported as 99% Oestrogen positive and 5% progesterone positive. But hormone blockers ( Letrozole is one) blocks Oestrogen. I suppose that not everyone responds entirely to these medications but I would certainly speak to your BCN as they can advise you on whether to remain on it or change to a different one. 

Thank you for replying,  much appreciated x