Possible to ve allergic to testosterone injection?

I was wondering as its been hours sense i injected and the site is hot to the touch and breathing feels like angry poprocks

edit: Alright well! I asked my mother to pick me up some allergy stuff to see if It helps, and if it doesnt i'll head to the ER! Thank you all for the comments! I was kinda, confused on if this was just normal vocal cords thickening stuff

Edit 2: its really sweet how many people are worried! Its a couple hours later and i took a Benadryl and i feel significantly better. Still some throat soreness but i can take breaths easily. Going to contact my doctor about Gel tomorrow!