my sd memory card doesnt read?

i have just returned from honeymoon and all my photos are on this sd card which crashed during my holiday, the camera is only 6 months old and i havent had this problem before? when inserted into the camera it says card locked but when put in card readers they dont pick up on the card its as if its not been inserted? ive tried the slider on the side but this doesnt make any difference, plesae can someone help im devestated i may have lost these photos, i have had to buy a new sd card, does anyone anyone know of a company that can restore sd cards to get the photos?? thanks