Could My Bad Taste In Mouth At 28 Weeks Pregnant Be Caused By The Whooping Cough Vaccine Or Pregnacare?

hi doctor, I am 28 weeks pregnant, feeling so bad taste in mouth since 3days. I can’t enjoy any foods especially sweet foods. It’s so intolerable. I had my whooping cough vaccination 3days ago and I am taking pregnacare. Nothing unusual. Is it’s because of my medication? How I can rid of this weird feeling? Please help me