i have been on 30 mg of celexa for about a year and for the past week i have been experiencing extreme exhaustion and less desire to do things. after speaking with my dr she said to try and go to 40 mg. it is my second day on 40 mg and still experiencing extreme exhaustion and feeling mental confusion (head feels fuzzy and thoughts arent clear) and feeling tired, jumpy, headaches, and jaw pain. will this go away? has anyone else experienced this and how long did it last? also what time do you typically take your 40mg of celexa? thanks.