im sorry to hear about your symptoms.
There are number of conditions which can cause these cramps in your lower abdomen. This can be due to Pelvic inflammatory disease if you have fever, lower abdominal pain , urinary symptoms like frequency or burning and vaginal discharge.If this is the case then you would need a pelvic exam to be diagnosed and also a ultrasound
UTI/Cystitis which is an infection of the urinary tract and the bladder can also cause lower abdominal pain of this region along with symptoms like increased frequency, dark colored urine etc. The diagnosis is made via urine tests and an ultrasound of the abdomen.
IBS or irritable bowel syndrome can also cause lower abdominal cramps, bloating, diarrhea or constipation as well. This can be diagnosed on a clinical examination.
Intestinal cramps can also be the cause of these symptoms which can occur as a result of something you ate. This can be corrected with adequate hydration and anti spasmodic drugs. This should settle within a day or two.
Now if you symptoms worsen, see a doctor but now stay hydrated and see if this improves. If you have any of the above symptoms i described then do definitely see your doctor.
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