Is Lemon Myrtle safe during pregnancy?

Just wondering if Lemon Myrtle is safe to drink during pregnancy?

My SIL's parents make an awesome lime & lemon myrtle cordial using the leaf from a lemon myrtle tree.
I went to drink some tonight but didn't as I am unsure and can't seem to find any info on it.

I am pretty sure its AOK, I have face product with it in and I know thats fine :)

I have never seen it on a list of the oils not to touch during pregnancy, although lemon and lemongrass are sometimes referenced as possible irritants.

I have personally never had an issue using it.

Hope so - I have eaten SO much of it! I treat it like any other item in my spice rack. Didn't even consider that it might be an irritant. Whoops.

Thanks everyone.
I thought I would be a little cautious. It is a new concoction that they're trialling and I am desperate to try it out. I will definitely have some tomorrow :)