I have been on sertraline for a little over seven weeks. I did 3 weeks on 50mg, 3 on 100 and the rest on 150. I keep feeling worse and worse. I just recently started having insomnia. I wake up every hour or two feeling really scared. If i try to nap during the day i get high anxiety when I start to doze. Has anyone else had or heard of anyone suffering these effects this far into taking the med? Did I up the dosage too quickly? Thanks for any replies.