When I decided to go to the ER I was cramping terribly every 15-20 minutes and they last 2-3 minutes. Pain was intense. Also I had vomiting 2/hr for 4 hours. I was admitted and stayed in hospital for 3 days. Sounds to me like you may have an obstruction too. I guess I was lucky because I didn't have symptoms until my early 50's and surgery in my mid 50's.
Best of luck to you.....keep us informed as to how you're doing.