Is this it????

TMI warnings: I am 38+4. Friday morning 3:30 am I woke up to cramps usually subsided by peeing, that didn't work. In the morning when I wiped I had some pinkish mucus stuff.  Went to see the doctor that morning for a regular apt,  (hold on having a contraction) still 1cm dialate. Following that I had brown spotting the rest of the day. Slightly crampy. At 8 pm contractions I felt it radiate from my back. It's now 1:03 warm shower to help my 7ish minute apart contractions, long stringy bloody mucus came out.  Contractions subsided but still getting them. Not light enough to sleep so here I am (just had a big one ) had to go down on my knees felt pressure like I needed to poop. Is the blood normal for a mucus plug? I thought it was supposed to be brown. Should I go in?