I am pregnant and I cannot seem to tolerate tea. I had this with my first child too - it was much worse then and I would actually vomit soon after. Now it just makes me gag.
I don't know what it is that causes this, I seem to tolerate other drinks with caffeine in. I can drink coke and I think I can drink coffee with no issues.
Perhaps it's the tannin in the tea, I'm not sure.
Anyone else?