I'm a ftm, 23 weeks and I woke up about 4 hours ago feeling like there's a lot of pressure on my chest and like I'm not getting enough air even though I'm taking big breaths. I know it's normal to have difficulty breathing as your uterus expands but when does it become something I need to see my doctor about? It's uncomfortable but I can deal with it if there's nothing to worry about I'm just worried about it harming my baby.