I've been on Lexapro a little bit over 4 weeks. I'm just wondering if the headaches will subside. Starting about a week ago I noticed my anxiety has improved so I'm happy to see those changes. However it's guaranteed that everyday I have a headache some days are worse than others. I'm just wondering if this will eventually go away. Also I've had hot flashes on and off the last few weeks. Is that also common? Any feed back is greatly appreciated.