Awwww hope you all feel better!!! I agree with an earlier poster that any breathlessness, chest pain or palpitations should be checked out (in pregnancy or not but ESPECIALLY in pregnancy) I too had blood clots on my lungs in a previous pregnancy, I also have a pre existing heart condition that can cause tachycardia. There are obviously lots of reasons for all of the above during baby, baby pushing on your lungs and ribs, colds, anaemia, hormone changes can cause SVTs (faster than normal heart rate) panic attacks (you don't need to feel anxious to have these) BUT in the slim chance you are like us.... Always always get checked over - good luck xxx