Heya!
It sounds like you're in a tough spot. You're passionate about medicine, but you're also struggling with the academics. You're also not sure if you're cut out for the harsh conditions of the NHS.
It's important to remember that you're not alone. Many people struggle with the academics of medicine. It's a challenging field, and it requires a lot of hard work. But it's also a very rewarding field, and it can be incredibly satisfying to help people.
If you're really passionate about medicine, I would encourage you to keep going. Don't give up on your dreams just because you're struggling with the academics. There are many resources available to help you succeed, such as tutoring, study groups, and online resources.
But if you're not sure if medicine is the right field for you, then it's important to explore other options. Economics is a great field with many different career opportunities. You could work in finance, accounting, business management, or even government.
The best way to decide what you want to do is to shadow someone in each field. Shadow a doctor and see what it's like to work in the NHS. Shadow an economist and see what it's like to work in the corporate world. Once you've seen both sides, you'll be in a better position to make a decision.
No matter what you decide, remember that you're still young. You have plenty of time to figure out what you want to do with your life. Don't put too much pressure on yourself. Just take things one step at a time.