Hi it almost sounds like you had a bad shot . Like hitting a nerve or something can make your glute swell. I would check the oil and solvents with your supplier if they can tell you. I won’t recommend any way of testing if you’re allergic because I am not a dr lol . But you can google it and there are few simple tests you can do at home. Good luck and hope everything goes alright.
Ps keep an eye on the swelling draw a circle around it and see it gets any bigger or smaller because it also could be an infection as well. This sort of stuff happens from time to time so don’t let it worry you to much. Just make sure everything is very sterile when you inject.