Ovarian Cancer?

First of all i will let you know that im a bit of a hypocrondriat. I also have a history of breast cancer and do not know my family history regaurding ovarian cancer. I have looked up the symptoms of ovarian cancer:
-Frequent bloating.
-Pain in your belly or pelvis.
-Trouble eating, or feeling full quickly.
-Urinary problems, such as an urgent need to urinate or urinating more often than usual.
-Fatigue.
-Indigestion.
-Back pain.
-Pain with intercourse.
-Constipation.
-Menstrual cycle changes.
all of these apply except for: pain with intecourse (im not sexual active) , menstrual cycle changes (my cycle is still not 100% regualr so semi-hard to tell), and the urinary problems is more mind.
the pelvic pain with back (lower back) pain has kept me home from school and hurts when i am at school. thi has been goig on for more than two weeks but has been getting worse.
please help.

[MollyDoherty97]

i am only 15 (16 in march of 2013)

[Londres70]

You had Breast CA?  OR You have a family history of Breast CA?  Confused.  

You need to talk with your parents about this and get seen by a physician because this could be a NUMBER of things BESIDES cancer.