the below article has mentioned some herbs tt can help or to avoid... hope it can help u https://sg.theasianparent.com/tcm-in-pregnancy
if you need to take herbs best is those certified safe for pregnancy by a tcm dr. Don't buy from tcm shop without prior knowledge
It’s better not to consume Chinese herbal if really unsure what is the purpose. Better to be safe than sorry.
any tcm related need to be careful.
Better double check with doc