What Causes Numbness In Leg After A Heart Attack?

i had a heart attack on the 5th october 2011 and was rushed into hospital and had an emergency operation to put a stent in, since then i have numbness pins and needles on the inside of my right leg, no swelling and no lumps, but hurts when i stretch my leg or put presure on the leg, also numb where catheter for stent went in my groin but not painfull there, was bruised badly there but its almost gone, im 37 years old and female