Translation of obsesión

I fell asleep but woke up in the middle of the night. My stomach turned upside down and I could not hold myself anymore. I needed to vomit and ran to the bathroom. This occurred three times.
For example, there are many regions in the United States in which only few African-Americans live. Somehow intolerance is the biggest there, because the citizens there are not used to foreigners.
We left and went back to the boat which took us back to the big vessel. We started our journey back to the main land. It was already late and from the main land, it was still a four hour drive back.