need caffeine but pregnant

I know you're aloud 200 mg of caffeine but I am a 5 cups a day person. I am 11.4 days pregnant and am totally exhausted I can't do a thing without feeling wiped out. I exercise..Still no energy. I cut cafgiebe to half a cup a day when I found out I was pregnant. today looked around my house and knew I had a lot to do. I drank 2 cups this morning and a cup this afternoon and got quite a bit done however; I felt guilty. how much caffeine do y'all drink??