Morcilla is fresh produce, not cured or smoked. It must be cooked - here in Spain it is usually shallow fried whole in oil.
But the big question is how long was it in your bags for? Were you able to keep it chilled? You don't give details of your location in your profile, so I can't gauge how long you might have spent travelling. If it went in the plane in your hand luggage or if it might have got warm sitting in your bags in a hot airport or the back of the car, do not eat it. You can always eat it again next time you go to Spain. It is not worth making yourself sick.