I'm on a gap year right now, I'm reapplying to uni after getting AAA, make sure you focus on your A-levels for now, try and find some work experience now or in a couple of months for once you finish all your exams. Also studying for the UCAT becomes so much easier (at least for me), since A levels were done. I'm not sure about the BMAT cos I chose not to sit it. I've been applying to jobs since June (of this year) and I've got a job as a lab technician in a school. For now I'd say focus on your A-levels and get that out of your way. You'll have plenty of time to plan what you want to do after that. I know I haven't got into medicine yet, but I hope this helps!