Do you think it's okay for me to use my ex for emotional support after my surgery?
Why do you need your ex to support you?
All my close friends have said they can't help me right now.
Its great that your ex gives you emotional support. Sounds like they are a pretty trustworthy individual in your life compared to other friends you have.
She's the best, I'm going to use her as a cum dumpster during  my recovery time at home.
I doubt that's what your ex has in mind when helping you to recover from surgery. She's probably worried about you and you shouldn't degrade her by saying crude things.