It usually doesn't be irregular tho all before it was the beginning of the month & im having a pregnancy scare cause all i have symptoms of pregnancy?

Please be careful: Periods may be irregular early in life. You may still get pregnant, please be careful and use protection from pregnancy and stds.

If you have missed: Your period then take a pregnancy test. If not wait until the period is missed and then take one. If not it is just a really bad period with pre menstrual symptoms. If it happens again next month visit your doctor as there is help.