Is it Possible for a AA genotype to give birth to SC.. Are They My Parents?

i was born in the mid 90s. At birth i am a very healthy child according to my mum and relatives. My mum said, she can count the number's of time she took to the hospital.

It all started, when i am six years old, i started having crises. Majorly rheumatic pains in my body.
When these become convesant, our doctor told my, parent to carry out genotype test on me. As per the result of the test, i am SC. Since i am young, i dont have the knowlegde nor understanding about these.

Some month ago, a program is being aired in regards to advice to youth, base on genotype.
Then i voiced out to my parent, that as an literate , WHY did they get married to each other when they knew they will give bith to SS. WHY did they give birth to me to make me suffer. WHY do i have to live my life like these always, (they dont allow me to get involve in many activities ). As the conversation ensued, my mum said, during her time, the awareness level is low, and people dont even mind it.

Six years ago, for rougly two years, i didnt go the hospital, talkless of having crises. Am very healthy, but since last year, the crises and many health issue erupt again.

We relocated, then we changed our hospital, the doc the said my parents and i should go for genotype test and blood group test.
THIS is where the problem lie's, my mum is AA and my dad is AC. Regarding to the bloog group test, all of us are A+. With my little, knowledge, about genetics, if AA and AC is cross breed, they will give rise to AA AC AA AA. And they are both A+ they will give birth to A+. When i showed my mum these mistake, he told my dad, then we went to another hospital to retake the test which is still the same.
Now my question is this possible,? Is there any scientific backing about these, or are the not my parent, but i have physical resemblance to my dad.
Please i need your answer's