newborn

My baby is 2 weeks old. I noticed that when my baby is asleep he sweats so much it soaks his clothes and literally drenches whatever I lay him on it's almost like someone put water all over his back, so then we laid him down the next time with no blanket and he woke up the same way, is this normal? The only thing that ever is soaked is his back, which is what he lays on.