Are you taking any medications for depression. I had a side effect from Paxil. It caused my body to believe I was pregnant. My periods stopped, and my prolactin levels went through the roof. I had breast milk, and was NOT pregnant. My GYN ordered an MRI of my brain, to see if I had a pituitary tumor. It was negative. My GYN wanted me to see an Endo doctor, but we made a deal. I would stop the Paxil, see if my periods came back and if the breast milk stopped. If not, I would go to the endo. Sure enough after 4 weeks off of the Paxil, my periods restarted, and my breast milk stopped. My prolactin levels went back to normal.
I have read up on pituitary tumors because I thought I had one. I'm sorry to say this, but the things you list sound like you might have one. The breast milk means something is going on with your prolactin levels, the blurred vision and headaches are side effects of a tumor. When a tumor presses on the pituitary, one, two, maybe even all 6 glands that are controlled by the pituitary gland can be affected.
There are 6 glands that are controlled by the anterior pituitary, they are
ACTH, TSH, HGH, FSH, LH and prolactin.
Did your doctor check all these levels? This would give a good picture of how well the pituitary gland is working. I would finally insist on having an MRI. I can't believe one hasn't been ordered already. Are you seeing an endocrinologist?
If I were you and getting nowhere with the doctors I've already seen, I would seek out a new endocrinologist. Start from scratch with this new guy. Don't tell him you've seen all these other doctors and they say nothing is wrong with you. Let this new doctor make his own decision about you without the other doctor's opinions. I've learned that doctor's stick together. Believe me, if one labels you depressed and you take office notes saying your depressed to a new doctor, this new doctor will read these notes on you, and almost at once concur with that diagnosis (depression-ugh!)
Hope that wasn't too unclear. I had to do this once before I got a "real" diagnosis.
Wish you well,
Karly