Injected 2cc of e350 about 2 weeks ago into ventrogluteal (hip) using 1" 25g

A few days after, a lump developed and became golf-ball sized. Its been 2 weeks and the lump is still there. It literally looks like a golf ball is sitting just below the skin.

I had one a year ago just like this (didnt notice it until i stuck a new needle in and withdrew yellow puss like fluid when aspirating) and it went away within a week or two, but its just concerning me because this one is still here

No redness, no red streaks, not warm to the touch, no fever, no pain.... just a lump

I started using warm compresses and massaging the area... can i do anything else?

I'd rather not drain it myself, and i dont want to see a doc unless its absolutely necessary

Any opinions would be appreciated! Thanks guys