have anyone experienced skin eruption or urticaria after injection?

i just had a terrible experience today. i'm in the middle of my 3rd cycle with sust, deca, and eq. i mixed three of them and shoot it on my left thigh as usual. after injection, i felt something different, uncomfortable feeling and then my face started to burn!!! when i looked up my face, there were a lot of freakin urticaria.
i was so scared that i had to go hospital.

now i'm ok but i'm still scare of my next shot.

does anyone know why this is happennig?

developed an allergy in the middle of cycle? how it is possible?

then what should i do? should i stop my cycle and start to pct?

Is all the gear the same. In other words are they all multi-use vials, or did you open a new vial. Has anything changed since your last injection? Are you using new syringes each time?

Not all Urticaria is allergic:

three of them were multi vials and there was a slight change. i just opened new eq but it was still same company. i am using axio's sust, deca and balkan's eq. i of course use new syringe in every single shot.