testicle lump for 12 years now showing strange symptoms?

It is very difficult for me to say this. This is the first time ive ever expressed this in any way outside of my own head. its taken me several years to even research about it online. here it goes...
When i was 11 years old i found a small hard bb sized lump on top of my right testicle near my epididymis. I didnt know what it was at that age so i didnt think anything of it. When i got a little older i learned about caner in school and was thrown into a deep depression and i regrettably repressed the lump. ive felt perfectly fine for the last 12 years aside from small incidents of anxiety attacks. now im 23 and the lump is still there unchanged in size but i noticed another lump on the same testicle but this lump (same size) is actually on my epididymis. that testicle has swollen to be noticeably larger than the other one and sometimes has a dull ache. in the last year i have been really stressed out with school and my family/social life. just when i thought it couldnt get worse i began to experience constant dull abdominal aches in my lower right abdomen which sometimes spreads to my lower right back, hip and leg. the ache comes and goes and sometimes causes a constant gurgling and minor discomfort. on a scale from 1-10 the ache is about a 3. if i dont think about it i cant feel it. it feels slightly like a cramp you get from running except not as bad. since the pain started ive had excessive gas. i dont know if the two symptoms are related but im really breaking down and dont know if i can face this. my girlfriend doesnt know about the lump but she knows about the stomach aches and she thinks its from stress. could that be possible? i have a tendency to over-think things and dwell on problems in my head driving myself crazy. i dont have medical insurance and im freaking out. my anxiety is back, worse than ever. any little thing that happens sends me into a panic attack and i know its ridiculous but i cant help but think that i could die any day. i think now i can fully realize the danger and im constantly stressed out. its effecting my social life, love life and school work. my whole life i had a hard time thinking about my future because i wasnt sure if i would have one. ive spent a good portion of my life in tears and depression and i want it all to stop. i know i need to see a doctor so im trying to work myself up to going. at the least i need some encouraging words from a professional that would hopefully help me to feel less hopeless. please help. i need to know the truth about all the possibilities of what can be wrong with me.