Need to find out that's the cause of my period being late about 1 week late . i always have a regular period and i don't think i'm pregnant i have no symptoms of that i just experiencing pms symptoms like cramping?

Some thoughts...: Pregnancy is the most common cause of a missed period. If not pregnant, other causes of a late or missed period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (especially birth control pills), hormonal disorders, etc… A visit to one’s Ob-Gyn doctor is a good idea if symptoms are persistent, recurring, or worrisome.