....but there is no uncertainty Chlobo. You've been given definite answers by multiple doctors, friends and family. The only uncertainty is the one you are creating. People unaffected by the habits you have trained yourself into, would walk out of the first GP appointment absolutely delighted to be told they have nothing at all wrong. (infact many would not have made an appointment at all to start with!)
Just to clarify for you - IBC causes the lymphatic system in the breast to 'malfunction' particularly blocking fluid in the skin, there would be - swelling, redness, hotness,rashes, itching, deeply dimpled skin that looks like every single pore is indented with the skin swollen around it (hence the orange peel description.) You have NONE of these symptoms and none of the others which I'm not going to list here. The doctors have looked, do you really think they can be so ill-educated and foolish that they couldn't see something that was abnormal after years of study, training and working with community patients ? Do you really think your friends and family would lie to you and risk your life ? There is no uncertainty. What you have is NORMAL. Yes, IBC can take weeks or months to develop - BUT you don't even have the right symptoms to start with.
Being here could help if you focused on working on the methods of self-reassurance. This is the last time I am going to say anything about IBC symptoms or try and help you to see the facts here. From now on, I'll reply if you come here to work on building your own ability to self-talk and rationalise.
The day that you accept that YOU are in charge of your brain, and your brain isn't an independent entity controlling you, will be the day you will start to be able to do something about this.