I second the above - you need to get work experience, both to help you decide if you actually do want to do medicine, and because it's essential for a med school application. You need to be really certain, medicine is a difficult and long-term commitment, and if you do not have a solid basis for your ambition it will come across at interview (if not in your personal statement).
Something else for you to consider OP - in other posts you have said that you are doing maths, FM and chem A2, predicted B in chem. For medicine you must get at least A in chemistry, and medical schools usually do not count maths and FM as two separate subjects.