YALL. Help me please 19w Pregnant

So I’m 19 weeks and 1 day with a baby girl. This will be our second baby. This morning I had some nasty discharge. Like a blob of mucusy discharge. Now maybe 10 hours later I just had it again. I haven’t experienced anything like this thus far . And I never experienced it with my first baby girl.

Called doctor on call and she said she didn’t know whether to come to triage or not to be checked 😑😑😑 I’m exhausted and am worrying but also just don’t know what to do