This can be tough during pregnancy, since so many options are off the table, even for your more knowledgeable replacement doctor. Although appetite is very complicated during pregnancy, if you can manage to substantially reduce carbohydrates you might see some benefit. Lomotil is probably safer than Imodium, at least during the first two trimesters, but it requires a prescription. Slowly increasing the VSL dose may help reduce any bloating, and the bloating often passes if you are patient.
Congratulations and good luck!