Thickened breast tissue worry

Hi, just found this forum & thought I’d post.
I noticed significant changes in my right breast - a really hard / large area that doesn’t change with my monthly cycle.
It’s been there for about 4 months.
I was referred to breast clinic & had a mammogram (came back negative), US & core biopsies.
Results of biopsies came back clear, says maybe hormonal but consultant ref me for an MRI which I’ll have tomorrow.
She explained that I have extremely dense breasts, the right one is swollen & shape is different & there is an asymmetry in level of density. Because of density hard to see what’s going on.
I don’t have pain but can feel it , sort of pulling / burning & I’m struggling with the fitting of my bra.
Has anyone else had this issue? Had an MRI following clear biopsies?
Thanks

Hi Bessie46, 

Welcome to the forum but I am sorry that you find yourself here.

I have moved your post to the Breast Awareness Signs and Symptomsboard to give users more of a chance to see it and respond. 

In the meantime please do call our helpline on 0808 800 6000 who will be able to talk to you about any questions you have and offer a friendly ear. The opening hours are below.

Monday-Friday, 9am-5pm
Late opening Wednesday 9am-7pm,
Saturday, 9am-1pm

Best wishes,

Lizzy