Welcome to the BC Community.
I am very sorry you are having to go through a beast cancer scare, after already having reconstruction following cancer in both breasts.
I'm also sorry you didn't get any replies yesterday. Probably, like me, others
knew they couldn't guess what might be going on over the Internet and without more information, but were glad you were in the hands of your surgeon and going through appropriate evaluation.
However, I still could have acknowledged your question and at least offered our moral support, so I want to do that now, and extend my wishes that all goes well with your MRI today! Please let us know how things turn out for you.
Best wishes...
Yes there is one type that exibits these symptoms ... Inflammatory Breast Cancer ( IBC). Usually this can be diagnosed by a skin biopsy. What you describe may well be some type of abscess or infection connected in some way to your implants. I'm sure the MRI will help in the diagnosis of this current issue... Regards ...