Hello Cynthia
As you mentioned that you are having weakness, fatigue, low blood pressure , throbbing crampy feelings .
You are a known case of prolactinoma with
hyperprolactinemia .
The normal level of prolactin in female is 0.-20 microgram/L( 1.9-25.9 ng/mL).
In your case level is 1200 + , very high i.e disease is not under control.
Prolactinoma develops few symptoms in female , these are
INFERTILITY ( not in you ), loss of libido,
dyspareunia , secondary amenorrhea with or without galavtorrhea.)Usually prolactinoma don't effect heart , so this is concerning in your case.
But the main point is your blood pressure and pulse rate ( 50 / minute ) . This is concerning and I recommend you visit a Cardiologist and get his opinion.
Fatigue, weakness,
throbbing pain, and flashes of light may be due to low blood pressure .
So please
consult a Cardiologist and get his opinion.
Hope this information will you.