Is there a platform like StackOverflow for #medicine/#health related #questions?

Yesterday, while riding the bike during #hot weather (36°C), I felt uncomfortable after having finished about 40 km. While riding, I drank cold water and have only eaten breakfast in the morning. Every expense of energy resulted in the need of vomiting, I felt hotter than before, only after I found a store to buy some food, I could overcome this state.

Online, I've found that possible reasons are low blood sugar level, too much water, too much sport, or the fact that I drank too cold water. Does anyone has experience with this kind of situation?