I am 28 weeks and 3 days pregnant with my 4th.. I have always been one to suffer from shortness of breath, now I am getting shortness of breath more frequently and my heart races up to 240! I was told I am anemic, I have tried laying on my left side, more water, doubling up on my iron, and still nothing changes.. I don't have to be doing anything to get this shortness of breath, because of this problem I have had to be induced at 37 weeks with all my pregnancies, Is there anything I can do? I feel so frustrated!