Im 14 and i have a Lump In my balls Im really worryed and scared please help me…?

Im 14 and i have a Lump In my balls but no attatched to my acctuall testicals, its a little hard lump on my left side ( i dont know if its attached to anything but ive olu felt it on that side.
it takes me quite a while to acctually find it and once i manage to find it it slips out my grip and i loose it again :/
its useally around the top of my left testical were the um (wires?) or vains go into it
its about 2 or 3 milliters big im saying that as an estimate as i dont have a ruler with me.
Like i said i am only forteen and i am extreamly worryed and scared, ive looked up testicular cancer and its symptoms and thi sis what i got:
1. A lump in or on a testicle;
2. Any enlargement of a testicle;
3. Shrinking of a testicle;
4. A feeling of heaviness in the scrotum;
5. A dull ache in the lower abdomen or in the groin;
6. A collection of fluid in the scrotum;
7. Pain or discomfort in a testicle or in the scrotum;
8. Enlargement or tenderness of the breasts.

I have none of these symptoms exept the fact that i have a lump in my balls,

I really dont want to have to tell my mum and dad about this because that would be reallly embarressing and i really dont want to see a doctor eather but i know the importance of geting it checked out :/
Details:
Im 14, In the 3 to 4th stage of puberty, a decent amount or pubes um i do masturbate, once a day or less sometimes twice on weekends im very sporty, active etc and no real health problem anywere else apart from lumps in my nipples with i got cjecked out for and were just hormones or something.. could this lump be the same thing?
Please tell me you advice or help on what i could do and what it could be just to reasure me, i will see a doctor at last resort but i really dont want to
Please help me
Thanks