Multiple health problems & feels like I'm living with cancer rotting inside of me for yrs (chronic pain). Opinions? (photo)

I need any & all opinions/suggestions of very bcc looking mole/lump on back of neck??? Have lived in chronic pain & dealt with many health problems for past 7-8yrs but havent even had a family doc for over 2&1/2 yrs bc wasnt taken serious enough & after few yrs caused me ptsd & gave up on the doctors in my local area but know i need get back in with good doc, just dont know where to start now or what to worry bout & take care of first? Ty in advance for advice & answers about my pic!