When I'm asleep on my tide (left or right I mainly do left) my tummy feels really heavy. I'm only 14 weeks but this is waking me up during the night. I've tried emptying my bladder etc but still feels the same. I have recently seen pregnancy sleeping pillows etc online is there any that anyone would recommend or anything else that could help? Also is it really that dangerous to lie on your back? In the bath I always feel tempted to do this but have learned to try and lie on the side