I'm 38+5, and for the past week every now and again I have this feeling of tightness in my chest like I can't take a full breath. It has only happened when lying or sitting down so far, and doesn't seem to be connected to anything else. After a minute or two it passes. It's not really causing me any discomfort, but do you think it is something to worry about? My next midwife appointment is a week away..