This may make you feel a little bit better (post collegiate NFL listed height and weight):
Barry Sanders 5'8" 200lbs
Emmitt Smith 5'9" 216lbs
Walter Payton 5'10" 200lbs
Dalton Hilliard 5'8" 196lbs
Warrick Dunn 5'9" 187lbs
Thurman Thomas 5'10" 200lbs
These guys weren't all that good in their collegiate and NFL careers with all that weight and height impairment, but they managed to cope.