Feel like I'll be wasting a valuable appointment

Hi,

I had a breast lump that had been there for a couple of months. I spoke to the GP and she referred me over the phone.

My appointment is this afternoon but I can hardly feel the lump now. I'm certain that it's nothing sinister and really don't want to attend the appointment.

 

I really don't know what to do, I feel like I'm absolutely wasting their time regardless of attending or not.