I have been on 150 mg of Zoloft for 14 weeks. I've been doing well. The past week I've been experiencing insomnia. The past couple nights I've been relaxed but no sleep. Has anyone else experienced this. Do you think the serotonin is levelling out? I take 50 mg of trazadone as well. It has always worked. I'm wondering if it's too much now with the Zoloft. Melatonin always worked as well, but not the past couple nights. Advice anyone?