I have been taking 25mg sertraline for 13 days and have noticed an increase of anxiety to the point I had a panic attack, is this common? Also what does the "poop out" feel like with this medication? I have also noticed I feel anxiety, low energy, and mood from the time I take my scheduled dose 9am until after the medicine peaks about 4-5 hours after I take it, after that I feel normal and have good energy, until around bed time when I get anxious about sleeping because I've been having vivid dreams sometimes bad ones. Last night I had a panic attack and today my anxiety has been very high for most of the day. Even after I took my medicine. I want to give 25mg a full 4 weeks to work but I am wondering if my brain is telling me to up the dose. Any thoughts are greatly appreciated.