Your uterus is cramping that much, that painfully? Or is it not your uterus cramping, but somewhere else a little lower? You might have an "active uterus" (which I do like the sound of so much better than an "irritable uterus").
I took calcium-magnesium supplements for this issue (not happening exactly as you described it, more of an all-day affair, no matter what), and it did take care of that problem, after lots of high-tech reassurances that ultimately did reassure me that I was not going into labor. Mine was also accompanied by cervical changes, and yet, it was just an active uterus. My naturopath helped me.
I personally would call my midwife, much sooner than your appointment. That seems rather uncomfortable, as the least of symptoms, and it could be something more serious (possibly).
I took calcium-magnesium supplements for this issue (not happening exactly as you described it, more of an all-day affair, no matter what), and it did take care of that problem, after lots of high-tech reassurances that ultimately did reassure me that I was not going into labor. Mine was also accompanied by cervical changes, and yet, it was just an active uterus. My naturopath helped me.
I personally would call my midwife, much sooner than your appointment. That seems rather uncomfortable, as the least of symptoms, and it could be something more serious (possibly).