Is it just depression?

I've been experiencing symptoms of depression. I've had a cough for two months now, I've had headaches, fatigued, body pains, anxiety, nausea, feeling of weakness, feeling inferior, problem sleeping and constipation. I've just recently started dieting two weeks ago, I've decided to cut meat completely out of my diet but have had fish and egg rarely. I've had a very rough night and today I woke up feeling slightly dizzy, my stomach felt upset, and I felt exhausted and weak. I've had problems in the past with low iron in my blood, I took supplements for it but discontinued after two weeks because I didn't know how long I should've been taking them for. I don't know what to do at this point and I need help.

[thatquietgirl]

I would suggest meeting with a nutritionist.  If not done correctly, a vegetarian diet can lead to deficiencies in certain important vitamins and minerals. Some blood tests your doctor can run can figure this out.  There's also the Supertracker on choosemyplate.gov that can help you keep track.