which alevels?

im looking into a career into either forensic pathology, dentistry, or pediatrics but im not sure what alevels to do. ive decided biology and chemistry. but for my third im being advised to do maths however i really dont want to as im not good at it at all. i was thinking either: politics, sociology or psychology. are these okay? which one would benefit me the most?

For most Bio-focused degrees, including Med, usually only two main A level subjects are specified (typically Chem and Bio), and Pharmacy or Pharmacology would require Chem and usually 'another science'. Your third A level could therefore be any other subject - so it makes sense to pick something that you will enjoy studying, and where you feel confident of a good grade. Don't worry about 'relevant' or what 'looks good'. If its Sociology or French or whatever and you will enjoy that, then thats all the reason you need.