Dear @Jammu,
Welcome back to the Wefugees Community and thank you for your question.
First of all, I am sorry to hear about your medical issues. If you are holding a "Duldung" (temporary suspension of deportation), you are entitled to receive asylum seeker benefits ("Asylbewerberleistungen"). These benefits include necessary/urgent medical treatments as well. If you are receiving monthly financial benefits from the local "Sozialamt", for instance, and you don't have a health insurance card yet, please contact the Sozialamt. They may issue a paper (often called "Behandlungsschein") which you need to get a treatment. If you are working and not getting any support by the government, you are most probably insured through your employer and hold an insurance card, right? In case you are member of a health insurance anyway, just make an appointment at your (or any) general practitioner (Hausarzt oder Allgemeinmediziner) for a first check up. He/she will refer you to a specialist.
I hope this helps and please don't hesitate to get back to us with any further questions.
All the best,
Meike