They cath me in the hospital and I had the same problem afterward so I was on antibiotics
After my last child, which I lost, and my previous pregnancy, I had the same problem. Unfortunately bladder control is a problem for a lot of women who have had children and it took months for me to get back to normal, I was quite a mess! But, unless you do have an infection, which could be the reason, it will get back to normal and there are exercises you can do to tighten things up. I know you don't need this with what you have been through but it will get better, so try not to worry and if ever you are feeling low and need to chat just send me a note!!
I am no Dr., but it sounds like you may possibly have a bladder infection. I would make a Dr.s appointment tomorrow if possible. It sounds like it needs to be checked out regardless.
I am so very sorry for your loss. Take care, and I will keep you in my thoughts.