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

### input:
I tried to put my legs behind my head(just being silly), but failed. So later I got naked, put my boxers around my ankles, and then used them wrapped behind my neck, to hold my legs behind my head . I even tried to autofellate, but failed(and didnt continue trying.). So I masturbated briefly in that position(in a computer chair). when I came, I got an odd sensation in my lower body. I felt fine for about 10-15minutes, and then I started feeling shaky. My abdomen/under my ribcage felt a little sore. But no back/neck pain. Now after 3 days of rest, my neck is bothering me, but its not painful. And I am paranoid that I have done spinal/brain stem/internal injuries. Im still a little shakey, which is frightening. I havent eaten much(in 36 hours Ive had some nuts, and a banana), or feel like eating. But I am in no real pain. just a little worn out, and I have a short temper. I just started using a heating pad on my neck, and havent noticed any change.I have what feels like a full range of motion in my back, neck, and shoulders. My abdomen is still not feeling right. And my nerves are frayed to say the least. and I generally feel awful.

### output:

Hi. Thanks for your query, an elucidated history, atypical presentation of what you did and what you got. Read the history carefully and understood your problem:The probable reasons for your complaints are the following:First the nature you have you say - short temper and now guilt has taken over. In the position you did masturbation the muscles got a strain, and now they may present one by one area. The treatment would be:Come out of the feeling of awe fullness and guilt, do not be short-tempered. Take complete bed rest. Take an anti-inflammatory medicine and a sleeping pill or anxiolytic under the prescription of your Family Physician.-Remember, the injury to the spine or a brain-stem would not have allowed you to right your query, so these are out of question. You will be alright within a few days. Do not try such awkward positions again.