No! It is not a clear indicator at all that you might be pregnant.
No more likely you have a infection.
You're probably pregnant and you're experiencing implatantion discharge.
If you have normal menstruation you cannot be pregnant.
Not necessarily. Many women have a discharge, pregnant or not. See the Related Link for symptoms of pregnancy.
Pregnant
No. Getting your period means you are not pregnant.
Possible pregnancy
it means you were pregnant but miscarried
It is normal for a woman to have discharge on her breast but it depends on the amount and frequency at which the discharge produced. If at all it soaks your bra then perhaps you might need to check with the doctor and see if it is an infection but if the discharge is clear, it should be normal.
I'm not sure what you mean by "problem" but typically cervical discharge during ovulation has an "egg-white" consistency.
Probably that your pregnant.