I've read in several places to avoid sleeping/lying on your back because the weight of the baby can constrict an artery.
Up until the last week or so I haven't really worried about it because I figured the baby wasn't big enough yet. But now I get a bit of a weird feeling. I'm not sure if it's psychological though.
My question is - how long is too long on your back? I've been having a rest in the afternoons, sometimes reading sometimes watching a bit of tv. Will lying on my back for half an hour cause problems for my insides? I want to get a facial before I get much bigger. (I'm 25 weeks). Is one hour going to be too long?