I know its been humid lately but my son has been very clammy for a few weeks, I've had to let him sleep in just a vest then pop in later to put a baby grow on him,hes sweaty on his back and neck, but feels cool. Stupidly googled it and now I'm scared of SIDS or a heart problem?? Going to take him to docs tomorrow, just wondered if anyone else has had this or not. He's been more grumpy lately too, but eating, playing, weeing and pooping fine 