Based from the information it seems like as milder form of "HEAT STROKE"
Here is what we mean my heat stroke, its kind of dehydration
due to the heat and body keeps on loosing the water. Following are the additional symptoms other then FEVER.
3)Lack of sweating despite the heat
4)Red, hot, and dry skin
6)Nausea and vomiting
7)Rapid heartbeat, which may be either strong or weak
In case of any of the above mentioned symptoms please consult doctor
as soon as possible
ADVICE FOR NOW,
1) Please avoid hot sun / travel during afternoon
2) Drink plenty of water with minerals substitutions (like glucon D in India / gatorade in USA)
3) Eat at proper time and take care of body's need for rest.
4) In case of loose motion
consult doctor , mean while drink lot of fluids like orange juice etc.
Hope it helps.
Dr. JAY PATEL