HELPPPPP, from medics/wannabe medics/anyone?!

Well i've recently got my A Levels results, and managed to turn them around from being on track for BBB to getting AAB! I've got a secure place at sheffield for chemistry, BUT the thing is i have ALWAYS wanted to do medicine but wasnt confident in achieving the grades, but i now have. So my question is (i realise no one can really decide for me, but advice would be extremely helpful) should i apply for medicine or go to sheffield, i may have met the academic requirements, but as for the work experience i have been trying since june to try and get a placement at my local hospital and i think i'm on the verge of getting it ( on receipt of a CRB) but i also would need to sit the UKCAT, find some care home work experience and write a new personal statement. The other thing is that there has been a huge emphasis on people not getting into university this year, and i'm aware of the fact that people would die for the place i have secured.

Any advice/help would be really appreciated, thanks

oh and i only have until this friday to decide, as i need to pay the deposit on my accommodation by then.

well it's becoming very tough to get into medicine with AAB - a lot of schools that formally accepted that just recently became AAA - that's not to say you couldn't get in, but having the minimum grades certainly does not put you at an advantage and limits your options - it's a tough choice, you'd have to get impressive work experience and write a cracking personal statement - bear in mind that grad entry medicine is possibly even more competitive - If you have always wanted to do medicine I'd take the risk personally, you will always be able to get in for chemistry again (as you know, it's a very uncompetitive subject) and there is no point studying a subject you're not really interested in for 3 years.