My baby is chunky and fussy. Related?

My son is exactly 9 weeks old and weighs just shy of 15 lbs. He's 23.5" now. He was 7 lbs 9 oz at birth and 20". He has been a fussy baby since birth (cries an abnormally large percentage of the time, according to other parents anyway) and isn't a fan of sleeping (sleeps about 8 to 9 hours in a 24-hr period). He is only happy when he's being held. Car rides...walks in the stroller...the swing...the vibrating bouncer... all of these things upset him because he's not being held. Well-meaning people will often suggest that we take him for a car ride to put him to sleep, but to him a car ride is the sign of the apocalypse. Even when we go shopping we have to carry him in the store because he'll cry if we use the stroller or put the infant seat on the shopping cart. Sometimes he's screams even when being held just because he's in a fussy mood. My question is... for anyone who's had fast-growing babies, does the fussiness and fast-growing go together? He's about to go into size 3 diapers, which on the cover of the box has a picture of a kid crawling, so I know he's growing faster than average since at 9 weeks old he's nowhere close to crawling. I wonder if there's such a thing as growing pains that can cause a baby to be constantly irritable. He's earned the nicknames "Hulk" and "Grumpasaurus". We do have an appt with the pediatrician in 2 days so hopefully he'll have some answers for us too.