Black tea?

Adele • 27. TTC baby #1 for 11 months, born July 2015. TTC baby #2 since march 2016 BFP Aug 2017 MC at 5 weeks BFP Oct 2017 🌈 Rainbow baby due July 2018🌈
Okay so I know I'm probably over thinking it but can I drink black tea while pregnant? I'm 5 weeks today and all I want is a cup of tea. I very very rarely drink it any more I used to have quite a lot now I'm lucky to have 1 a fortnight! It's just taken me soo long to get here that I don't want to do anything to harm this baby! ?