Im always late on my period. even when i was taking birth control. doctors said it was nothing its that true?

i never get my period on time, is that normal i mean is there something wrong with me?Im always late on my period. even when i was taking birth control. doctors said it was nothing its that true?
your doctor most likely knows what he/she is talking about. i have a similar issue and my doctor told me that it was pretty regular. most girls do not have the 28 cycyle.
it depends on what you mena by ontime.. peoples periods always change.. try going to mymonthlycycles.com and track your period. It will tell you how long you average length is and when it may or may not come, my period is every 33 days, give or take a few days and that is perfectly normal.
good luck