You don't like histology- to be fair, not many people do. Some people actually really like it though. It has it's place though, the same as any other part of the medical curriculum. In reality it isn't that difficult to learn a reasonable bit about because it is very visual.
Please do not chase a medical career if your sole interest is in earning large sums of money. You can earn nearly 100K a year driving a tube train in London. Though I cannot say for certain how stressful that job is or how onerous it is gaining entry to that vocation I do know how onerous medicine can be.
If you like chemistry then possibly some of the biochemical, pharmacology or physiology sides to medicine will be right up your street.