what can I do at home if I have hemoparitoneum?

I’ve had this before in my abdomen. It feels exactly the same. I’m on bloodthinners. I cant afford more medical care. It’s not as bad as it was last time, I’m hoping I can do something first. I have been too sick for the past 2 years since my diagnosis and my life has fallen apart. I can barely afford my meds and food for me and my puppy.

what is the cause?