When do syptoms from levaquin arrive?

Just ended my 10 day cycle of levaquin a week ago.I havent had any major side affects, just weird dreams .I didn't know levaquin had side affects until read about it now I'm getting worried.How long did it take to notice side affects?I had a bad strep infection & bronchitis with 103 fever.Tried cefzil and it was giving me heart palpitations & wasnt helping anything..took that for 5 days so my doctor put me on levaquin 500 mg once a day, been off of it for a week now...just feel some cracking joints.... maybe its all in my head because i am researching so much...but i am worried about this....