Medicine can be a difficult course to get accepted for, not everybody gets in on their first try. Here's a little story.
At the beginning of year 12, there were 9 of us who wanted to study Medicine. However, at the end of year 12 a few gave up. Three didn't feel that they'd get the grades, another 2 got sick of the competition. That left us at 4. One of the 4 decided she'd go the postgrad route, dropping it down to 3.
One was incredibly bright, also very motivated and hardworking. She managed to get an offer from Cambridge, which she thoroughly deserved. Another was also enthusiastic, his family also had a history at Imperial. He didn't make it there but got an offer from BSMS, also deserved.
I wasn't either of them! After straight rejections, the last arriving on my birthday, I felt that I'd done something wrong. I flunked UCL's interview and got a generic "goodbye" from Imperial. Every other person in our year held offers for something somewhere. Slightly demoralising, especially when people said "but you're so clever!".
However, I focused on my A-Levels - making sure I had the grades to be in a good position next year (A*AAA for those interested). I reapplied, chose my choices carefully and learned from where I went wrong the previous year. However, Imperial rejected me again after another mediocre interview. Thankfully Southampton gave me an offer, which I'm gladly taking up.
It may be tough, seeing everyone else succeed where you didn't. However, it's not a race or a talent show. If you're serious about Medicine, get your grades and some experience. A gap year isn't the end of the world by any means. If I knew how mine would turn out, I'd have gone for deferred entry.
Sorry for the life story! I just felt I'd share a little something. Remember, gap years can be cool.