What Causes Severe Pain In Abdomen Along With Diarrhoea?

two days ago I went to the dr for what I thought was a kidney infection. the urine test came out ok. it was decidec I had a muscle sprain. I was given flexerile an oxycodone. now my back ach is milder but my lower abdomen is painful. it hurts all the time, more so when I touch it. yesterday I had an explosive bowl movement.I am deciding wether to go to the er or wait for my dr. tomotrow