Need help injecting Deltoid!!!

[Shurik]

Just did my shot. While I was pushing in the needle my should kinda twiched a couple of times, so I aspirated and injected all the fluid pretty slow while trying to keep my hand steady. It was pretty hard. lol
Now when I stretch my arm across my chest it kind of feels weird with a dull pain, so I'm not sure if thats all normal or I messed up somehow?

[Phate]

Just did my shot. While I was pushing in the needle my should kinda twiched a couple of times, so I aspirated and injected all the fluid pretty slow while trying to keep my hand steady. It was pretty hard. lol
Now when I stretch my arm across my chest it kind of feels weird with a dull pain, so I'm not sure if thats all normal or I messed up somehow?

it's normal, the twitching and pain both, i get it when i inject b12 as well