Ladies help me,my doc isnt respoding. Is this mucus plug?

Becky

So i am 28w4d with didi twins and when i went to the toilet this morning i had this huge discharge wich i never had it before. Until yesterday my discharge was kind of cremy and white in small amounts. This was from this morning

And again when in toilet after 5 hours i guess i had this one:

Does this looks like mucus plug? I have an cerclage on wich was preventative at 13 weeks but i cant help myself and worry. My next appointmant with my doctor isnt until next tuesday. Please ladies what are your thought? I need some piece of mind. Ftm here.😟😟😟