dont't worry. It's one of the signs of pregnancy. Gums tend to be swollen and bleed. It's the hormones again.
I bleed when I brush. My toothpaste goes in white and comes out brown because of the blood. It is recommended to use soft bristles but I'm used to medium. Maybe I should change. I dont't know how long this will last. Probably after birth? Haha!
Take care! dont't floss too hard either!