Hi @sadia,
Welcome to the forum and sorry to hear about the stress you’ve been under about your diagnosis. It is good that you are seeing a doctor about it though and it got caught before too much liver damage had occurred.
Regarding your question, you need to talk to your doctor before changing anything about how you take your medications. However, tenofovir is considered safe and is the recommended antiviral for those who are pregnant (e.g. see the guidelines from the Gastroenterological Society of Australia, recommendation 22 - https://www.gesa.org.au/public/13/files/Education%20%26%20Resources/Clinical%20Practice%20Resources/Hep%20B/HBV%20consensus%20Mar%202022%20Updated.pdf#page=14).
Thomas