For The Past 3 Weeks, On And Off, I Fell

For the past 3 weeks, on and off, I fell an achiness all over. No fever, not tired, everything is normal. I did stop taking Celexia about 3-4 weeks ago (not cold turkey, but gradually), but have not read that one of the withdrawal symptoms is achiness. So I am just curious. I'm a 53 year old female. Thx