Warfarin Sodium and broccoli

Been on warfarin about 3 weeks due to an a-fib condition.. Dose is 2.5mg a day. Since starting I cannot sleep, feel very tired and fatigued and slight sour stomach. Doctors say this is due to the a-fib but I don't think so. All I hear from my doctors is no side effects. Hs anyone else experienced these symptoms, and/or is there a website where I can find some answers.

I have noticed changes in my memory, and felt very fatigued when I first started the warfarin.The fatigue has tapered off after 5 months but I notice more changes in memory lately. I get off the med in one more month. I found the best way to control drug levels is to eat at least one frozen meal a day with a lot of vegetables, such as a Lean Cuisine that is advertised as having twice as many vegetables as a regular lean cuisine...then I eat dinner and limit leafy green vegetable intake. I'm also not positive of this, but sometimes it is harder to control when I drink a lot of green tea. Hope this helps someone.

I take 7.5 mg. of warfarin daily, and have been for about 5 years. The biggest problem I have is dizziness, the inabilty to concentrate, vision, and waking up at night, everynight. I am a healthy 54 year old male, and have regular test run twice yearly.