most helpful answer it's been a while since i posted this. i've taken steps to improve my iron intake and my blood looks darker and stains things better. so i think watery looking blood might have been due to a lack of red blood cells. i didn't have too much trouble breathing however so i'm still not entirely certain.
could light colored or watery blood be a sign of anemia? . my blood looks light red rather than bright red it seems thin it won't even completely stain a white t-shirt. my spouse has much thicker darker blood by comparison.