Depro Provera Treatment Side Effects

I hope someone can help.
I was recently diagnosed with endometriosis. The Gyno suggested I start using the depro provera for treatment (injections once a month). I was already using the shot for birth control (once every 3 months) so it seemed like the logical thing to do.
This was the first month having them back to back. I got the shot at 10 in the morning and by 11 pm I was hospitalized in severe pain. I thought I was dying.The doctors were totally useless and accused me of only wanting drugs. They finally agreed and gave me morphine for the pain after I insisted I'd taken everything I could at home. In the morning the discharged me with a prescription for Tylenol with codeine (one of the things I'd ALREADY taken)
I've been out for a week and I'm still in a ton of pain and I'm having mood swings so badly I can barely take it.
I go from happy and laughing one minute to angry and crying feeling hopeless. I'm short with everyone.
I go from not being able to sleep at all to not being able to keep my eyes open. Not to mention the bleeding has not stopped
It's only been a week since I officially started the treatment and I'm not sure that I'm going to be bale to handle this.
Depression and Bi-Polar run in my family and I fear that I'm headed in that direction.

Has ANYONE had a similar experience or some advice?
I feel totally alone. My gyno said it's too far gone for surgery and without the treatment I will probably never conceive. He gave me  years after the treatment to be able to have a baby. I'm only 19 years old and hysterectomy is not an option right now.

PLEASE HELP.

[ticked]

So how does the doctor know that you have endo if you had no surgery?

You need to get a second option as I was also told that there was nothing that could be done and surgery wont help.

I researched online the best endometriosis doctor in my area and I found one.  He booked a surgery immediately because he thought that I had a recto vaginal nodule in which i did. Once he removed that plus all the adhesions that were glued to all my insides I have never felt better and all I take now is continuous BCP. Do not settle for what this doctor is telling you.  

Also a hysterectomy is not going to take away the endo.  Some people it helps but for a large majority it does not and the pain and endo still come back.

I was on the Lupron shot after my surgery which is similar to the Depo shot. I went straight into a depressive state once being on it. I will never go on it again.  Thats just my opinion.