Is this preterm labour ?

I have been pooping for days now and peeing like crazy.

I also have been loosing so much of my mucus plug.

I have had lots of lightning vagina in my cervix and crazy anxiety I cant sit still..

I had spotting a couple days ago and I get really bad lower back pain and sometimes contractions that last a couple minutes and go away.

Midwife doesnt seem to care at all

..

I had my ultrasound .. James is 5.7 lbs already at 33 weeks..