Do i have to tell my mum that i am angry at her?

i was in the hospital 3 days ago.im calling my mum but she didnt answer my calls.so i called the restaurant but she's not there.so i left a message to her staff..but unfortunately her staff forgot to tell her..i was waiting for her call..but no calls at all..the next day i was discharged im calling her..hoping that i could see her before i go to my house..but still no answered..no return were even made..so i felt hurt by my mum.when i saw her.i told her everything that i feel..i told her that, im dead before you see me...and i told her all my heartaches from her..but i felt so bad..coz i know i have hurt her feelings also..and i felt bad also...coz i hurt my mum..i love my mum so much..