Hi,
It is good that you are feeling better already.
Heat-related illness such as
heat exhaustion occurs when your body gets too hot. This can be caused by physical exercise or hot weather. It can present with heavy sweating, feeling weak, dizziness, nausea, headache, fast heartbeat and dark-colored urine, which indicates dehydration. It is important that you get out of the heat quickly. Drink plenty of water or other fluids.