Starting Celexa

I started taking Celexa (generic) 3 days ago.
So far I've been getting headaches, feeling a little shaky, getting some hot flashes, and some insomnia. The last 2 nights it's taken me at least an hour or so to get to sleep. The first night my 2 yr. old woke at 5 am and it took an hour and a half to fall back asleep.
I'm taking 10 mg. for 8 days and then will up to 20 mg.
I've decided to give this med 2 wks to see if the side effects calm down.