I havent had a period for almost a month i been cramping real bad and having major back problems. my breast are sore but not so much am i pregnant?

Perhaps: Although there may be other causes of your symptoms - pregnancy is certainly one of them. Please take a home urine pregnancy test if this is available in your setting. Otherwise see a medical provider so they may administer one.

Possibly: Please consider having an evaluation done by your health care provider to determine if you could be pregnant.

Do you meant that: you are a month late for your period? If yes, would go ahead and take a home pregnancy test now so that you know one way or another. Take care.