I'm 16 and I was prescribed Doryx (doxycycline hyclate) about a m...

I'm 16 and I was prescribed Doryx (doxycycline hyclate) about a month ago to treat moderate acne. I've been taking it since then and I'm supposed to be on it until September, however, I'm not sure if I'm going to last that long if I keep taking it. While I didn't experience any side effects for about the first week, after that, it turned terrible. I experienced insomnia, which included not being able to fall asleep, waking up about 5-10 times a night (often being unbearably hot and sweating intensely, even thought it was a cool 70 degrees F in our house.), and to make it worse, i was up for about half an hour each time i woke up. And to make it worse, I was always tired through the day, but I still couldn't sleep. While sleeping I had very vivid dreams which is unusual for me. I also had pretty bad stomach pain, and terrible pain in my kidneys for a few days. It felt almost like a kidney stone. I also am very rarely hungry and almost get sick when i eat. Since on this medication a month ago, I've lost about 10 pounds just because I can't eat. I've had a difference in mood as well. Most of the time, I'm happy, but now, I have very noticeable mood swings and periods of depression. And the medicine ISN'T EVEN HELPING with my acne. Oh, and these are only SOME of the side effects I've had. So, right now, I'm not sure if i should quit the medicine, or if the medicine will put an end to me first.