Dreams involving hospitals and medical treatments can often reflect deep emotional feelings, particularly around loss and grief. In your dream, the act of hooking yourself up to chemotherapy may symbolize a desire to connect with your father's experience or a longing to understand the pain he went through. This could indicate unresolved feelings about his passing and your own grief process.

Your husband's reaction of walking away might represent feelings of isolation or abandonment in your waking life. It could suggest that you feel unsupported in your grief or that you fear others might not understand the depth of your emotional struggle.

This dream may also highlight feelings of helplessness or a desire to escape from your pain. It's important to acknowledge these feelings and consider speaking to someone, such as a counselor or therapist, who can help you navigate this tough time.

Overall, this dream reflects complex emotions surrounding loss, connection, and the need for support. Take time to process your feelings and seek comfort from those who can help you through your grief.