2cm lump found on breast

Hi, last night I found a smooth, rounded, mobile lump in my right breast - I was pretty shocked to find it as I check regularly and haven't felt it there before so surprised I found something so big (approx 2cm)

I booked to see my GP first thing this morning and she said it felt like a cyst but has sent an urgent referral to the breast clinic for further test. I am an absolute mess, can't stop crying and thinking the worst. 
Dont really know what I want from this group chat, just some support I guess and to talk to people who are going through a similar experience.