Buproprion sr symptoms and conditions

Please everyone who suffers from any of these symptoms, I would love an email asap as I feel like I am going crazy.
My dr prescribed buproprion sr 150 mg along with lexapro 20 mg about 3 weeks ago to help combat a major bout of postpartum depression. She had to wean me off of 40 mg of Prozac first from previous depression issues.
Since then, I feel as though I am losing my mind. I cry all of the time, I have pain in the middle of my right abdomen area that feels like a burning/indigestion feeling, I have no appetite at all, totally anxiety, terrible fatigue with even worse insomnia. When I do finally get to sleep, I experience HORRIBLE nightmares that last for hours. In addition, I have had multiple headaches and a few vomiting episodes.
The depression was so horrible that I feared the way I was feeling. Yet the buproprion has given me all of these new feelings and I am really affraid I will never feel normal again.
Should I give these new meds more time to take effect? Has anyone else used them for postpartum depression and felt these symptoms? Please email me at ****** I feel very alone in the ways I am feeling and would love to chat with someone who has had the similiar experiences.
Thanks
Trisha