Mucus plug 34 weeks

Lindsay
So tonight after I went potty I looked in the toilet and noticed I had lost what I'm sure is my mucus plug. Maybe not all of it but a pretty big chunk. Part was mucusy with brown and the other had tinged pink. Any moms have any experience with loosing it early. I know it can regenerate I just am feeling a little paranoid because past two days I've had left side stabbing type cramp that I shrugged off because it's totally inconsistent and then today lower back ache. I'm obviously going to call my doc when they open but I'm just sitting here thinking about it now