Hi My Name Is Mirissa And Im 25 And Im

hi my name is mirissa and im 25 and im really getting worried but im almost to scared to even find out whats wrong in april i found a smal lump about the size of a quarter on my back i had an ex ray and it came back nothing they said its just a pocket of fluid and should go away on its own or a displacemtn of fat i cant rember the name but its nothing serious i was mostly worried because its right on my spine right in the middle of my back well everything they said was ok then i went on methadone the legit way of course and shortly after started having random spells or nausea that over time have become daily and around july i started actually vomiting very randomly then i will get a throbbing headach and sometimes in minutes both just stop i talked to the doctor at my clinic and he said it is not caused by the methadone which made me really nervous then i discovered after totally forgetting about it that the lump on my back has gone away but actually has gotten larger its squishy and i had a nurse there look at it she said i should see my doctor obviously but that she thought it was just a fat pocket she showed me pictures online of ppl with them and it looks identicle to what i have but i have no clue whats causeing the sickness but in the last few weeks my nausea has gotten really bad its threw out the entire day very random then just as quickly as it starts it stops i have 5 year old who i need to be hear for im not trying to be dramatic but im really scared if anyone has any clue whats going on with me please right back i know i need to see a doctor and im making an appointment 2moro but i just want an idea of what it might be so i know what to tell thye doctor cuz they are not taking the lump seriously but something is wrong and it started when i got the lump and knowing its getting larger is scaring me really bad please help thank u