I don't know if anyone else has had this but I was experiencing shortness of breath and extreme sharp stabbing like pain in the left side of my back(directly back from my left breast)     I come from a family of doctors and nurses so my first though was a blood clot. Thankfully it turned out to be Pleurisy which is an infection in your lungs. (You won't get any medication or pain meds if you are pregnant) but it hurts extremely bad. Just a heads up if any woman experience this. I was told blood clots are common in pregnant women and you shouldn't ignore the pain. I'm glad mine wasn't that serious, but listen to your body especially because your body isn't just yours right now.