I am 9 weeks pregnant and I just drank about 12 oz of hot tea with ingredients hibiscus flower, rose hip and apples. I read hibiscus flower can cause miscarrige, should I go to the ER or am I going to miscarry?

There is no reason to worry at this point.

IF you begin to cramp severely and experience spotting/bleeding that is when you should call your doctor or go to the ER. Hibiscus isn't necessarily the best choice to have in tea, but its not a promise that you will miscarry or experience any problems for that matter. You would probably have to have a lot more than you did to experience any discomfort. Just as a precaution, discontinue ingesting it until you can speak with your doctor.