Breast Clinic Friday Morning

I found a small lump outside the aeroela about 11 days ago. And my GP has referred me to the breast clinic, and my appointment is on Friday. I'm beyond terrified as I suffer with severe anxiety as a result of a lifetime of trauma. Getting a cancer diagnosis would push my mental health over the edge, as I'm barely functioning from day to day as it is. My GP said she is "low worried" and said it was smooth and moveable. But, I'm inconsolable no matter what anyone tells me. They found a fibroadenoma in that same breast when I was 27, but I couldn't feel a lump at the time I just had some "bloody discharge" from the nipple. Could it be I've got another fibroadenoma? I've convinced myself that this time I've got cancer, and I'll be leaving behind my 11 year old daughter. I'm 35 years old, and my life has been difficult to say the least. For the last 11 days I've had nightmares, and cried every day. I'm also getting shooting pains in both breasts, that comes and goes which could be because I'm on my period,  but I don't know. I also could have sworn that the lump got smaller or less prominent at one point, and then went back to normal. Am I imagining things? I don't  really know the point to this post, I just needed to get it out. I apologise for the self pity, I feel like I want to run away which is pointless obviously.