Hi doctor two weeks ago I woke up with a lump on the back of my neck, even with shoulders and in the middle of my back. Originally I went to the ER and they thought it was a bug bite and gave me antibiotics. A few days later I saw another doctor who thought it was a lipoma, I got an ultrasound and they said it was most consistent with a lipoma however when I went to get it surgically removed the surgeon said she felt it was not a lipoma and I she did not want to make an incision, she then requested me to get an MRI for more information. After getting the MRI the doctor called and said it was nothing to worry about not cancerous and to check back in a few weeks and that it was just a fatty pocket. However I am experiencing constant back and shoulder pain as well as headaches, jaw and neck stiffness. It should be noted I recently stopped smoking weed and I was high when my friend pointed the lump out to me. I have been extremely paranoid and stressed which I believe has caused a nasty reflux in my stomach maybe even an ulcer as I feel a constant burning sensation. I have now been taking antacids to help cure that however I also have a constant feeling of something being in my throat, perhaps something wrong with my esophagus? Do you know what this lump is and why it is there it literally grew over night and why do I feel like there is something in my throat it has been two weeks now.