Hi. I'm A44 Year Old Woman And I've Been Suffering

Hi. I'm a44 year old woman and I've been suffering for a few months now with body aches and pains. I ran a low grade fever the other day with the aches. At least half of each month my legs ache and I'll feel like I have flu aches and fatigue. I work out at least 4 xs a week. The achiness is worse 3 days after a workout.