Been having real bad nights can't sleep at all keep waking up feeling so anxious. I feel like my heart beats fast also, is this normal? I've been taking it at night today I tried taking it at noon to see if I'll feel different but no change. I feel so anxious and every little noise freaks me out making it hard to go to sleep or even rest at day time. I tried laying down during the day but my head just keeps on working and working thinking about a lot of things which won't let me sleep. I don't feel relaxed at all is all this normal? I also called the doctor today waiting on there call.