Your symptoms are highly suggestive of a seizure disorder, most commonly generalised tonic-clonic seizures (sudden episodes where a person loses consciousness and their body becomes stiff, followed by jerking of all limbs). Since these episodes occur mainly in the morning, other forms such as juvenile myoclonic epilepsy (a type of epilepsy in teenagers characterised by sudden muscle jerks in the morning) may also be considered, but other causes should also be evaluated. It is important to consult a doctor or neurologist promptly for a proper assessment, which may include tests such as an EEG and brain imaging. Early diagnosis and appropriate treatment can help control these episodes and reduce the risk of further attacks.