2.5 week old son cries whenever I lay him down. Has been fine up until last night. He got up at 9pm and has not been down for more than 30 minutes by himself. And that was only once. When he's awake he acts hungry - I fed him bottle - breast and formula and fed him straight from breast. After eating he falls asleep in my arms but once I put him down he starts grunting and fussing and then cries. He usually takes a 3-4 hour nap this time of day. Idk if I should call the pediatrician or if it's gas or a growth spurt.