The best person to ask is the practitioner who prescribed this formula to you. Hua Shi (“talcum powder”) is used in Chinese Medicine and with the proper diagnostic reasoning and over an appropriately controlled time frame it is considered not just safe, but clinically useful, from a TCM perspective.
Most of the research you seem to be alluding to is related to the use of topically applied talc powder which in some studies, not conclusively by any means, has shown a potential link with ovarian cancer when applied vaginally (lengthy research here).
A relevant quote from the aforementioned study:
"The absence of mesotheliomas in patients treated with therapeutic concentrations would appear to demonstrate a high degree of safety.
The biological rationale for talc carcinogenicity has been misunderstood in terms of its chemical and physical properties, and other suggested mechanisms such as inflammation have not been supported by epidemiologic data. Talc is not fibrous and not genotoxic (Endocapron et al., 1993), and lifetime whole body exposure experiments in female laboratory rats found that ovarian tissue was not contaminated with talc and that ovarian tumor incidence was not increased (Boorman and Seely, 1995)."
Now all that said, unless they gave you a custom formulation - jia wei xiao yao wan does not normally contain hua shi, so I’m not entirely sure why it is in your formula. Some of the manufacturers use small amounts of it in their teapill formulations - so I’m assuming that is why. Again, it isn’t a concern generally from a practitioner standpoint and is in larger amounts in some fairly commonly used formulas that have 800+ years of a clinical usage.
As for jia wei xiao yao wan, that is easily one of the most prescribed formulas in the world and is used incredibly often by practitioners globally. I can’t comment on whether it is appropriate for you with just a few of your symptoms listed, but your practitioner will work with you to get your symptoms resolved and may change the formulas around from time to time to facilitate that process.