Vet school backup plan

I’m planning on either majoring in bioengineering or biochemical engineering (I graduate high school in 2017, so it depends on which program I get into). If vet school doesn’t work out (knock on wood ) then I would like a medicine related alternative path. I just want it to generally fit under requirements for a bachelor’s in bioengineering because I don’t want to be bombarded with prerequisites. I am, however, ok with taking multiple tests to satisfy requirements (MCAT, GRE,etc.).

Some options (in order of preference):
Dentistry
Med school
Health related engineering masters (i.e, genetic engineering, or just plain biomedical engineering)
Potentially pharmaceutical stuff

Thanks in advance!