50 year old healthy woman. Twice in three weeks I ve gotten sick and it has lasted for 24-36 hours. Symptoms: Get out of bed feeling weak, bone joints and muscle ache 7-8 on pain scale. Within 5 hours, severe chills, lethargic, muscle/joint pain is excruciating. Sleep for 12-24 hours. Abdominal pain cramping compared to labor pains 9/10 on pain scale, (unable to move or walk when this happens) that travel abdomen off and on. Both sides of low back/bottom of rib cage hurt 5-6 on pain scale left of belly button and both sides of low back. 24-36 hours later when feeling like I can get up to move around, chills persist and fatigue returns until I rest more. Within 36 hours, I m fine.