I would start with your internist, family practitioner or gynecologist.
Could be either you are ovulating, are pregnant or have some kind of infection. If it is too unbearable and goes on for days, see the doctor.
You need to go and see a qualified medical practitioner (a doctor) about this as soon as possible.
A good reason to see the doctor ASAP.
You can see an orthopedist or physiatrist for post-injury elbow pain.
Go and see the doctor about it because it is very difficult to give a reason over the internet
For ongoing stomach pain, you should see your regular doctor. They will be able to diagnose what is wrong with you. If it requires further diagnosis, they will recommend you go to an endocrinologist.
First see your normal doctor and he/she will give you the name of a specialist if he thinks anything is wrong. And what do you do if your Primary doesn't make any suggestions?
Being pregnant can make your breasts tender, but it could be something else. Maybe you should take a pregnancy test or see a doctor.
See a doctor
I don't see why not, some women or most women may be more sensitive then yourself so that could cause them to have pain and not you. The pain is because your breasts are preparing for lactation, but if you think you may be pregnant take a pregnancy test or go to see a doctor because every woman's pregnancy is different and you may just not have that symptom.
See your doctor.
Of course you should see your doctor. Liver pain needs to be diagnosed and treated by a doctor. Your family doctor will probably refer you to a specialist