Firstly I just wanted to say that these are amazing GCSE results to get so be proud of yourself!
I definitely think you have a shot at getting in - you have to remember that the admissions process is made up of many different parts (the personal statement, entrance exams (if needed), past grades and predicted grades, reference and etc). These are all judged equally, and Cambridge actually pay less attention to GCSE grades and focus more on predicted grades and marks achieved.