Earl grey tea while pregnant?!

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I know this isn't very 'controversial' but I'm not sure where else to put it. I used to drink a triple latte almost every morning and quit cold turkey when I found out I was pregnant. I'm only 7 weeks along and extremely tired all the time. Would a cup of earl grey tea be okay in the morning to help me wake up? I I'm not sure how much caffeine is in it.