Mucus plug?

Is this a bit of my mucus plug? Feels like egg whites?

Obviously no blood but I’ve been having back ache, sharp pains going up my back and my stomach has been aching for the last 3 days?

I haven’t been poking about hard but can’t seem to find my cervix, it just feels all soft inside like the inside on my mouth? I’m 33 weeks today FTM.