Robsta

The only advice I'll give is to jab the side of thigh, like your pocket area...this way you asre far more in control.....it sounds to me that you had an oil bubble near the skin, probably caused by needle movement, not injecting deep enough.....make sure the pin is all the way in, and give the area a good massage after...
I can never understand why people struggle reaching round to their glutes when quads are just as good and soooooo much easier to control jab from......