Earl Grey Tea during 1st trimester

Hi mummies! I'm currently in my 1st trimester and my nauseousness is getting worse and ONLY earl grey tea (without sugar/milk) can makes me feel better. However i've read that it's not advisable to drink early grey/any form of black teas during the 1st trimester else there's a high risk of miscarriage. Has anyone went through something similar before? Please advice, thank you!