Wah, 20 kali donate darah tu bagus la! Tapi honestly I'm not sure pasal discount kat hospital kerajaan for regular donors, I've never heard any of my mum friends mention yang ada such benefit, so you might need to call the hospital directly or ask at the blood bank to confirm. Kalau ada pun, mungkin bergantung on hospital mana dan ada ke valid donor card ka, since last donation mu dah lama (2020). Best ask the maternity ward directly, they'll give you the actual answer!