Is it normal to gain this much weight while depressed?

I was a teenager at the time (16) and my life couldnt have been going any better for me.
I was constantly happy and going out often with friends.
There was an accident in my family that left my one of my family members quadrapeligic (paralized from the neck down) so my mom decided to move us to some hick town (it was actually a village) and be her nurse/home care.
She moved our family there the year I was graduating. I went to a school that was Kindergarden-Grade12 with a total of 300 students and 13 kids in my entire class.
I made friends with a few of them but a majority of them have knowm each other since kindergarden so id always feel out of the loop.
I was devistated because i made so many plans for my prom and graduation and now they were all just gone.
I got my hair dyed and the stupid salon bitch burnt my hair so i had to get it cut short to get all the burnt parts out
Everything that was happening to me just made me feel terrible about myself and what my life had become.
I was used to going off on my own and hanging out with friends in a big city then all of a sudden being confined in a small house located in some village no ones ever heard of.
I noticed i was getting a bit chubbier but i didnt have a weigh scale to see if i was gaining a lot or a little weight so i didnt think much of it.
After a few months i noticed more weight so i finally found a scale and seen i gained 25 pounds within afew months. I was felt waaay worse than ever.
Another few months went by and i had gained a total of 40 pounds (including the 25).
Most nights id cry myself to sleep because my mom wasnt in our lives so much because she was dealing with my aunt, i was getting fat and everything just wasnt going right.
I got to move back half way into the semester and i lost 10 pounds within the first few weeks and i was just way happier but not even close to how i was before i first moved.
Then after i was done school my mom made me move back another time (i was going to get a job promotion that would have allowed me to stay on my own but ti didnt come fast enough)
Im here now but ive gained back the weight i lost and an additional 20 pounds making it 60 pounds i have gained from all this bullshit.

i have been exercize daily (even when i first moved) and been watching what i eat.
Im thinking about diet pills because everything im doing doesnt seem to be working and that makes me even more unhappy about whats become of me.

is it normal to gain that much weight (60 pounds) in less that 9 months? );