I understand your situation. You seem to be suffering from anxiety symptoms especially around exam time. However the reason for your memory problems need to be evaluated in detail. It is easily manageable with appropriate treatment. Some counselling sessions along with medical help also might be useful for you. I would also be more than happy to help you with that if you are looking for online assistance. Discussions will be held confidential. You can directly consult with me through Practo as needed. Online chat consultation is available.