Mentioned temperature is normal body temperature reason for fatigue is not fever u manage ur bowels take probiotics, fibrous diet, plenty water, still have problem better consult

Temperature you mentioned it is in normal range. These symptoms fatigue laziness light fever might feel due to general weakness. However you can use this remedy at your home,it is not having any side effects. Take 20 basil leaves (Tulsi), boil in 150 ml water, add crushed ginger 15 gm, boiled this solution until reduced to half, now restrain itand add 3 teaspoon honey. Consume this tea twice a day for 3 days  you will get surprising results.