Before I finally decided to go into nursing, I was in a similar situation: I had a BS in chemistry, then went to graduate school for pharmaceutical chemistry, and almost got my MS, but had to leave for family reasons. Besides that, I realized that working in a lab was not for me--I wanted to have more contact with the public. When I graduated nursing school
in 1984, nobody was hiring because of new insurance regulations, so I took the first job I was offered, in psych. You wouldn't think that psych had much to do with chemistry, but my background really helps me understand the major psych disorders, which are all biochemical imbalances of the brain. Also, it helps me understand medications and their actions and interactions, not to mention being fluent in calculations. I have no doubt you will find and settle into a niche that suits you, just keep yourself open to whatever opportunities come your way.