I have a kidney malfunction and I started gaining fluid.
Do you think you know what's caused the kidney malfunction?
Yes, I know it's because of the medicine.
Medicines cause kidney issues sometimes, and that is a shame. Going to see a doctor about it can help, so I think you should make an appointment for that. Otherwise you can die from having kidney failure later on.
Going to the doctor is going to cost a lot of money, I'm afraid.
It's unfortunate that seeing a doctor can be expensive, but the alternative could be severe illness or death. You should really consider going to the doctor or the hospital if this fluid retention persists, or else something terrible might happen.