I am sorry your cat has this trouble.
As long as the bleeding has stopped, she does not have pale gums or an odorous discharge you can wait on the ultrasound.
However, if she has any trouble or you want to know if any fetus"remain in the womb it would be a good diagnostic tool.
If you do not plan to breed her, you can avoid the expense of an ultasound and just go directly to spay surgery.
Please let me know how she is doing. Just reply here or if you prefer, we can speak on the phone.
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