hi,though infection may be the cause of your abdominal cramps,there are chances thatyou can have a pregnancy
in your fallopian tubes,if you have missed your periods do a bhcg to confirm pregnancy and you will need a ultrasound
of the pelvis to rule out ectopic pregnancy.it is a emergency condition which may require surgery.if you are having fever
, loose stools you could be having pelvic inflammatory disease
which may require hospitalistation.another possibiliy is to check to copper t in postion whether thread is felt in the vagina.