hi, i'm a 17 yr old female and recently i developed tendonitis in my foot... i went to the ER and they gave me three prednisone tablets and thats the last i've seen of the steroid (about 5 days ago)... then i got the flu a couple days later but thats not what i'm concerned about... i have not started my period and that was supposed to happen about 3 days ago... i was just curious if prednisone could have possibly messed with my hormones and made me late... my boyfriend and i have not had intercourse, but we have fooled around to the point where i may have come in contact with, well you know... i probably shouldn't be worrying but its all i can do right now, please someone tell me i'm not pregnant!!!