Talk to Gynecologist on Gynecologist Suggestion

AoA doctors, hope you are fine. My wife is 27+ weeks pregnant MashaAllah, we have yesterday heared from somebody about vaccination which need to be done in first week of 7th month. But our doctor is not available for 5 days and also she didn't told us about this, we are taking proper checkup as per doctor advice, but she didn't told us any thing abouy this, what should we do? We have to wait for doctor or go to another doctor for vaccination? And is necessary to have done in first week of 7th month? Thanks in advance