I Have Been Experiencing Varying Pain In My Abdomen For

I have been experiencing varying pain in my abdomen for the past 2 days. The pain ranges from mild annoyance to sharp and severe. I am also experiencing nausea, but no vomiting. I can somewhat liken the milder pain to menstrual cramps. However, I am 61 years old and had a hysterectomy 10 years ago. I generally run a low temperature, like 97, so having a temperature of 98.9 right now is a bit of an increase from the norm, but not earth-shattering. I have no appetite.