Beating insomnia.... help!!!

SOS!!!!! i've been up for 2 hours with no sign of sleeping any time soon. i'm only 5 weeks and i can't get comfortable, my body aches, and i get too hott. any tips, tricks or remedies for this crazy insomnia going on? i would take melatonin if i wasn't pregnant, but especially since this is our rainbow baby i've been extra cautious as to what i put into my body! TIA!!!!!! i need sleep!!!!!