Hello. After intercourse, I began having unbearable cramps in my lower abdomen, so painful in fact it has had me doubled over in pain unable to straighten my torso. I was unable to locate the strings of my IUD, I typically have no problem feeling it. Since it is Sunday, I would have to make a trip to the emergency room. Is this something I could wait to see my obgyn on Monday for, if I can stand the pain or it subsides, or do I need to make a trip to the emergency room ASAP?