My five month old son thrashes his legs in his sleep and it is starting to really wear on us all. He will kick both legs out over and over again, sometimes arching his back, too. Sometimes he will do this for hours, usually he wakes himself up first. He has been really cranky, fussy, and tired all the time lately. The pediatrician just thought it might be teething but we can’t keep losing sleep for weeks on end (we already have). Anybody else have this issue?