For me, I had unbearable pressure at the site of the obstruction, as well as the classic wave-like pain. It never got to the point of me needing emergency surgery, as it always cleared eventually. There would be a pop, a gurgle, and an immense feeling of relief for a few seconds until the pressure started again. Rinse and repeat for a few more hours until everything was finally through. I should add that the gurgling sounds could get ridiculously loud, like a blocked-up drainpipe unclogging itself.
It's always better to have elective surgery if you can. Emergency surgery comes with a higher risk of complications and the surgeon doing it may not be an experienced Crohn's surgeon. I dunno how bad your strictures are, but it sounds like it may be time for a surgical consult.
Dx Crohn's in June 2000. (Yay )
Tried: 5-ASAs, azathioprine, 6MP, Remicade, methotrexate, Humira, diets.
1st surgery 20/2/13 - subtotal colectomy with end ileostomy.
2nd surgery 10/7/15 - ileorectal anastomosis. Stoma reversed and ileum connected to the rectum.
Current status: Chronic flare. Do I have any other kind?
Current meds: 50mg 6MP; Entyvio (started 3/11/16)