I'm 21 weeks pg and for the last few weeks I've been really short of breath and dizzy. I had the dizzyness with dd1 so I'm not too worried about that - but the breathlessness is concerning me - quite literally its walk from my front door to my kitchen and I have to sit down and catch my breath. Has anyone else had this? is it normal?? is it just because I'm doing more with a hyper toddler?? Should I go see my mw or dr??