This is definitely spot on. I HATE uncertainty, hence my obvious health fears, but also my fear of planes, my need to organise everything etc. The main thing I can't let go is this behind the collarbone (especially left side) location of this lump - I've been able to feel nodes in my jaw/neck since forever so I don't care about that. Not to mention the many googles I've done where it says 'I had no other symptoms but a lump,' but really that's probably a very small minority. But I did dig into the right side and found something in the same collarbone area, seems a similar size, but just tucked away under muscle etc and can't be moved. So I think in the end it may be a lymph node, but it's just a normal one. For some reason, the one on my left can move all around, in front and behind of the collarbone, and the right one can't, and maybe that's just me and I'll need to get over it.
I will REALLY try because I have so much to look forward to this year - I'm about to finish university and in 3 weeks head to Europe for 2 months, and this is really making me feel like everything that I was excited for in the future is being destroyed in front of my eyes. But the only thing destroying anything is me and my crazy mind.