I'm sorry to hear the news about your partner. It sounds as if you are feeling overwhelmed by the situation at the moment.
We have a team of nurses here at Cancer Research UK that you can call and I wonder if you think it might help to speak with one of them? They are available Monday to Friday 9am to 5pm on 0808 800 4040 (free to call from a UK landline).
Alternatively does your partner have a nurse specialist that you could call or prehaps you could ring and speak to the GP for advice and support.
