It was my 4th day of periods, on and off i always had mild pain during these days. But suddenly in the 4th day morning i had severe pain in lower abdomen. So i rushed myself in the emergency ward. They gave me Gastric and pain killer medication to which i got relax. Than the next moment i did whole abdomen ultrasound to which it was found that my colon was loaded.  Even now when i try doing loo with bit pressure the lower abdomen pains a bit. Can someone please tell me if it is serious? I have no other symptoms except pain since 1day