FIG. 1 is a top plan view of a nursing pillow showing my new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image of that shown;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a reduced top and rear perspective view thereof, the broken-line illustration of the nursing mother and baby being for illustrative purposes only and forming no part of the claimed design.