Do not, i repeat DO NOT try to drain it, unless the bump is visible and it looks like someone stuck a ball bearing under your skin dont touch it.
It should be nothing, as steelmass said, you could have shot it too shallow. Now unless you shot dirty gear or with a dirty needle dont worry about infection. Also do try to massage it as to disperse the oil, and also do try to shoot a bit deeper. Now im surprised that with 23" gauge and 1.5' inches deep if you couldnt reach muscle then you got to revise your workout plan, diet and AAS regimen.
Try not to stress it, but if the bump gets bigger, swells, gets itchy and reddish, now godforbid it starts leaking out puss or any crap like that dont do a thing yourself, go to the nearest emergency room,