I went to the psychiatrist yesterday for the first time. I got some medicine for my depression, anxiety and panic disorder because well, I still wanna live. I just have some general questions about these antidepressants.

1: Are they supposed to make you feel queasy and want to vomit?
2: Is it normal to feel exhausted the entire day? I feel much more tired than yesterday.
3: How long should I take them in order to see some noticable affects on my mental health? 

Would appreciate some answers from people who have experience with these drugs.