This is exactly the same as my situation. I studied biology but not chemistry, and wanted to go into forensic science.
If you do not like chemistry, then there is no point in going into a 'forensic science' degree as there is a lot of chemistry involved, for example toxicology. Instead, apply for forensic biology at uni, which is of course, directed at the biological components of forensic science. Within forensic biology, there are a huge amount of pathways you can go into, from forensic anthropology, odontology, entomology and more.
I studied human biology, biology for health (diseases etc), psychology and sociology. Uni's offering forensic biology, or sub-disciplines like forensic anthropology, do not seem to mind about the no chemistry element (many of them also accept psychology).
Also, you do not need to study medicine.