If my skin blisters from a bee sting, does it mean i'm allergic to bee stings?

No: Allergic reactions to bee stings are characterized by symptoms away from the site of the sting. If all of the reaction to a sting - blisters, swelling, redness - are all directly connected to the site of the sting, it's a large local reaction. If you get stung on the foot and get hives on your arms, or your throat swells or you start to wheeze - those are allergic reactions. See an allergist.

Bee sting allergy: The victim can have allergic reactions which can result in an anaphylactic shock. The blood pressure of the body decreases; rashes appear on the skin; paleness, a rapid pulse, chills, cold skin can follow. In more serious cases there is a shortness of breath, tightness of the heart, faintness and eventually death can occur. It is very important to remove the stinger as early as possible.