What could this be, other than pregnancy?

Brown and yellow discharge
breast pain
lower hindmost and pelvis pain

Last night, I be really cold and my breasts and lowerback and pelvic hurted A LOOOOT and I don't know what to do.
Answers:

Is there a birth control that won't craft me gain weight?

menopause

Will this reduction the breast size?

Possible endometriosis.

I was planning to, but i get scared! plz back!?

Liver, kidney issues? Other than that it could be a yeast infection, either course, go see a doctor :)

Ortho tri cyclen lo?

Urinary tract infection. You entail antibiotics.

my girlfriend?

it might be the way you are starting this months period=
toease your mind see a Dr= a D&C might be needed

Question from a man to a women?

Pelvic inflammatory disease or a vaginal infection. I never have those sorts of symptoms with any of my pregnancies. The breast anguish could be unrelated to the other two. And I never had the sort of misery that you mention until I was surrounded by labor. See a doctor! PID can cause scarring that can result in you never anyone able to become pregnant!

ADHD related.?

It sounds close to you have an infection of some concerned. You don't know what to do? Go to a doctor.

Why some women experience bad (painfull) cramps every month for their menstuation?

Sounds approaching you may have some sort of infection (bladder, kidney, or yeast) if these are not typical pre-menstrual symptoms for you. I would recommend you progress see your doctor ASAP to get your problem diagnosed and treated. Don't be afraid. You'll spend more time and gusto worrying about it than if you only just get it taken meticulousness of so you can start feeling better soon.