### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Today marks day number 4 with  discomfort and pain in my lower abdomen. I thought i was just super gassy, until the discomfort didnt subside. I began feeling sharp twisting pains every so often when i laid down and stood up or on my feet for more than 20 min. After 3 days, I can stand/walk with little to no pain, and the overall discomfort or my abdomen has decreased a great deal, BUT for the past 2 days I have been experiencing sudden 30 seconds of intense/sharp surges of pain in my lower abdomen and lower rectum. In the past 2 days i have had about 15-20 of them. I also cannot poop, it hurts too much, especially if I try a bit hard to get it out. Farting even hurts. Even when I finally do release it I only feel a little bit of relief which is immediately followed by more pain and cramping. I dont have a fever, Im not vomiting nor am i nauseous, and I have no vaginal or anal bleeding.

### output:

Hello, Thanks for the query to Chat Doctor. Forum. I would come up with these possibilities for this type of acute pain in the rectum from 4 days, This includes.1 Fissure in anus, diagnosis can be confirmed by physical examination by a surgeon. Fissure usually develops excruciating pain.2 Hemorrhoids, diagnosis can be confirmed by physical examination by a physician and get his opinion.3 Tumor in the large intestine (rectum) . Diagnosis can be confirmed by colonoscopy. In my opinion consult a surgeon and get his opinion regarding this acute pain. Good luck. 