Arm pit lump been refered to breast clinic

Hi first time here and writing I’ve had a hard lump in my arm pit for 3-4 weeks now doctors put me on antibiotics to try and see if that got rid of it it didn’t work so I’ve been referred to breast clinic my appointment is 6th Feb

I’m so worried I’ve googled lump feelings etc Yea I know I shouldn’t but from what I’ve read lumps that are cysts infections etc are soft mine is hard and cysts/ infections go away within 2-3 weeks anyone had similar to me and had its nothing outcome or it’s cancer outcome’
Also what will happen at my appointment

Thanks all

Ok so no replies ?