Hello Sir, for some people it takes some time for the body temperature post vaccination to come down. It's been a week now, it will start reducing now.
Next Steps
When your body shows a little higher temperature, then try not to exert it with strenuous exercises. Increase your intake of water n take adequate rest.
Health Tips
Get back to exercise when you feel all fine. Could provide you a natural remedy for this. Please do consult here for further details