It's seems like you came across some viral infection affecting your body. Having upset stomach pains in joints, nausea sickness sore throat etc.
Without further complications it may subside in 3-7 days unless you take precautions in taking rest and diet
Next Steps
take conservative treatment consisting paracetamol 3 times a day. take adequate rest almost bedrest. eat and drink frequently
Health Tips
keep yourself hydrated lots of fluids to be taken like coconut water, juice water etc.