I understand why this is so frightening to you, since your mother died following symptoms like the ones you are having now. This does not necessarily mean, however, that you are going to die, or even that you have what your mother had. I am a Grandma, not a doctor, but I know after 62 years of living, raising children, and caring for grandchildren and great grandchildren, that there are also non-life threatening, and even non-serious, causes of stomach pain and cramping.
However, as I said, I am not a doctor. Why don't you try calling your doctor, and if the office is closed, ask for the on-call doctor to call you back. Calling a hospital emergency room and speaking to a nurse might also help, if the hospitals in your area provide this service. This will hopefully give you some peace of mind.
I got to the hospital during the Blizzard of '78 - if you are from New England or the northeast you will have heard of it - on an enormous National Guard truck that was part of a plane load of heavy duty equipment flown in from somewhere in the south in response to the Blizzard. (Yes, "blizzard" is always capitalized in this context lol.) My medical problem wasn't serious enough to send out the National Guard for, although it was something that if possible should have been seen by a doctor. The girl next door (and I do mean girl, not woman) went into labor, the truck came for her, and I hitched a ride!
