anxiety medication and pregnancy help

Fiona
Hi there
I was wondering if anyone had any advice or knowledge on anxiety medication and pregnancy. Every now and then I take 1 or a half of a beta blocker to deal with meetings and presentations at work. Only ever at most couple times a month.
However I found out I'm pregnant and am about 5 weeks in, so still early, but have a big pitch at work this week that my boss is flying over for and I have to present. Panicking already and am keen to find if taking one beta blocker on that day is bad, or if any alternatives to try? Internet seems a mix of advice. I know it's best to avoid and I want to but I get such bad panic attacks just need to find a way to cope (I do yoga, meditate, have therapist etc, just public speaking and meetings when high level panic me irrationally).
Thanks all :(