What Causes Pain At The Site Of Skin Graft?

HI, I JUST HAD A SKIN GRAPH DONE FOR HYDRADINITIS, BUT THE DONOR SITE ON ABD IS ITCHING AND HAS DEVELOPED SOME SCAR TISSUE, BUT IM HAVING SO MUCH PAIN ON THE DONOR SITE, FEELS LIKE IM BEING STUCK BY NEEDLES IN ALL THE HARD AREAS IN THE SITE THAT STRIKES DOWN THE SIDE OF THE BODY. THIS FEELS LIKE PINCH NERVES ARE STRIKING DOWN MY SIDE AND LEG..THIS SURGERY WAS DONE AT THE END OF MARCH...WHAT CAN I DO TO STOP THE PAIN AND ITCHING? I USE VASELINE AND SARAN WRAP BUT THIS DOES NOT HELP