Mucus plug?!

After working an 8 hour shift on my feet all day, when i went to restroom and wiped, there was a small amount of what looked like mucus on my toilet paper. It has me worried because of having two miscarriages with my last two pregnancies. Is anyone else experiencing this? Is this something nornal? I am only 5w4d today and my first prenatal is not for another two weeks. Should i be worried?!?!