My opinion is that dysbacteriosis analysis has to be made but also full blood count with electrolytes also should be investigated. Your stool must be also examined very carefuli. In your case enterosorbents (for example -Enterosgelum) have to be prescribed (it is not contraindicated during pregnancy
but will significantly improve digestion and will provide antidetoxification - it is crucial for you. I think you have colitis
may be with chronic pancreatitis
as well. Your vaginal and intestine ecosystems have to be renovated using probiotics. The need for antibiotics or antimicotic drugs will depend on the result of analysis.
Dr O. Aleksandrov