All good questions for a doctor.
For your birth control question, there are
many non hormonal birth controls you may
want to consider. Also, ask your doctor
about the mini pill, it has a different
hormone that you may not be so sensitive
to.
Is this bump always there, at every point
in your cycle? Are you doing
self
breast exams or are you just
squeezing? If you feel something, then
it's a good idea to speak with a doctor
just to be safe.
It sounds like you have a hormonal
imbalance, have you always had hair on
your face and nipples or is this a recent
thing?