Lost mucus plug at 35 weeks? Should I be worried??

Cora
Should I be nervous? I was showering and as I was getting ready to wash down there I touched what looked like a big booger. Different from discharge to me, very slimy and green/clear.
Was it my plug? Should I be worried because I'm 35 weeks? She only weighs 4 lbs so I'm nervous 😞😞 Please help! ❤️