TMI... help 😩

I’ve had this constant lower back ache for 3 days now, today it’s worse and even going down my thighs.... I’ve had two loose bowel movements and I’ve been losing parts of plug for WEEKS but more so the past couple of days. My pelvis feels so heavy and aches. I have my dr appt tomorrow but shit I feel so miserable. I don’t remember feeling this way with either of my kiddos. I’m 36+2 today.