Soooo...do you mommas think I should get an additional diaper bag to carry my breast pump set in or…

Soooo...do you mommas think I should get an additional diaper bag to carry my breast pump set in or just keep it all in one diaper bag

.. I just want to make sure there is enough space in the bag...for all the rest of his stuff..also I see some mommas say don't put a blanket in the crib with your baby...but how r they supposed to stay warm I don't think just a sleeper will keep them warm...