Allergic reaction? I've had this lotion on my dresser for years and i finally used it because i was lazy to?

allergic reaction? I've had this lotion on my dresser for years and i finally used it because i was lazy to the store to buy a new one. ive been using it for over a week now and its been fine. But today as i lotioned my whole body with it my stomach started to itch. as a normal reaction i strached it and as i keep doing do i started to feel A LOT of small bumps appearing and wales on my stomach and it started turning red. am i have an allergic reaction? i automatically put Medicated Body Powder on it. am i doing the right thing?