Dimple in breast and gp found lump

Hi I have noticed for last few weeks a change in shape at the bottome of my left brest it has dimple id say a inch long when i lift my arm however i do have implants and i assumed it could be that so didnt worry to much however the more i noticed the more I thought about getting checked and booked a GP appointment I went and she immedietly said she could feel a lump and has refferd me for the 14 day cancer track. I am 33 and feeling worried as I had not realised myself there was a lump. Can anyone also advise on the next stages. I only saw the GP yesterday. Thank you.