Things keeping me awake

So for about a month I had noticed a lump just above my collarbone around the time before I left for Miami. It had been causing mild discomfort here and there and some tension along the right side of my neck. Yesterday I had finally gotten sick of it and decided to get it taken care of so I went to the ER and the news I was given was not the best. Basically they couldn't do anything for me there but said it could be cancer. I was asked about chest pains and night sweats and obviously I'm awake right now. Why? Well I'd noticed I was sweating. I thought back to when I was in Miami and remember specifically having lunch one day with my friends and my chest was hurting pretty much the entire time and I was enough for me to sit there kinda alarmed at it but I didn't say anything. So now at 4:19am I'm awake and wondering. Everything I read online is freaking me out. I needed to share that.