Hey people, I discovered a small pea sized lump just below my shoulder blade, so I was worrying and went to the doctors, the doctor said 'with a high level of confidence he can say it wont be anything serious' - Although as time has passed (a week or so), i am still worrying even more now

I'm a 33 year old male, perhaps not the best diet but always been slim and never smoked. I drink on weekends but other than that i am healthy and very active, i'm just wondering what peoples thoughts are if the doctor says 'with a high level of confidence' he can say it shouldnt be anything serous? and his first suggestions was to just keep an eye on it from month by month basis. Yet im still worrying bad. I have booked in for august 5th to potentially have it removed, though i dont like the idea of being cut open to remove it while awake, whats peoples thoughts if the doctor said what he said? is there a high likelihood of them saying this frequently even if it was something bad? I put the removal appt date back to aug 5th a i was going to weigh up in my mind if it got any bigger in the meantime or stayed the same, i might just leave it in, but I can't decide

Is there anything i can do myself to help distinguish this small pea sized lump or ease my fears/worrying?

any thoughst or suggestions on this?