TMI pls help

Hey girls I posted something like this last time I had my “period” as the same thing happened. I contacted my doctor last time she said a suspected miscarriage (I was not pregnant) she only spoke with me over a call not in person as she said she can’t due to Covid. This time I’m due my period it’s happening again and In all my 13 years of having a period I’ve never had this before. There is no blood or brown blood with this just how it is in the picture I will attach can anybody who has ever had this before please reply if you’ve found out what it is bc my doctor is no help atm I’m kinda worried about it as it’s unusual to me last period I had blood for 2 days and this stuff for 16 days 😔