bloody plug?

Mercedes

a week ago there was bright red blood in my mucous, I've been losing chunks of my mucous plug since 28 weeks. I'm currently 37+4, last night was the worst sleep I've gotten this whole pregnancy. I had harsh period cramps pretty much the whole night, woke up this morning to go pee and passed a decent sized chunk of mucous with pinkish red blood this time, still followed by period cramps. I know these cramps arent contractions because my stomach doesnt tighten, does anyone have any thoughts??