Hello...i have a question about my situation, sorry if my english isnt perfect...

i noticed theres a Lump at the left down side of my neck(most likely its located at Trapezius muscle), the lump cover quite a big area, and u can easily tell by looking at the mirror, you cant move it, it just feel like muscle...

then i went to see the doctor
and the doctor said"it just feel like muscle to me, yeah it actually bulged, but the way i feel it, its all muscles, and some people are a little bit abnormal, so...i would worry about it"

so...what do u guys think?
i am a bit worry about it