Is it bad that you usually get your period around the 12th then last month I got it the 15th and this month I am 5 days late... :confused:

How old are you?

Periods get off and it isn't really unusual. You were only 3 days "off" and that is normal. Periods don't usually go from exact date to the exact date of the next month anyway. If you have had sex in the past month there is always a possibility that you could be pregnant. There are other things that could throw a cycle off like stress, change in eating (diet), change in exercise routine. If you have had sex then you should take a pregnancy test to rule that out. If you aren't then I wouldn't worry too much just yet, periods can get off. Sometimes you can even skip months. At that point I would go see a GYN to determine the possible reasons for a period being that off. But I have had periods be off by a couple of weeks even and there was nothing wrong and no apparent reason.

Nope, this happens to me too. I'm not "regular" which means that you have your period every 28 days, mine switches too. It can be from stress, anxiety, and it just kind of happens. Don't worry.