Am I allergic to epinephrine.

Epinephrine allergy. Symptoms you mention are effects experienced not benificial to you but accompany the effects one is desiring this is not allergy to the medicine but is called sideeffect like the skin of the fruit with the fruit you can still use the drug and minimize the side effects by not taking the full dose all at once also slowing down the pace of the injection sit down while injecting and lie down after.
No. Most likely you developed side effects from it, such as palpitations and tremors and may be headache. These are common and resolve within a few minutes and are not an allergic reaction.