The Interoception Sensory Questionnaire (ISQ)

This document ("Validation of the interoceptive accuracy scale (IAS)") discusses something similar & possibly the same thing, and has a list of 21 questions in the back (Figure 2).

Tried to get a direct link but failed - this seems to go via Google search results so don't know if it is non-volatile but a search on the title above should work if this fails:

https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&ved=2ahUKEwj4ycfsytnjAhU9WhUIHX10D7EQFjAFegQIAhAC&url=https%3A%2F%2Fosf.io%2Ffqgu4%2Fdownload&usg=AOvVaw1wMPdKTp7Z4JckyZPlCVKj

This document ("Validation of the interoceptive accuracy scale (IAS)") discusses something similar & possibly the same thing, and has a list of 21 questions in the back (Figure 2).

Tried to get a direct link but failed - this seems to go via Google search results so don't know if it is non-volatile but a search on the title above should work if this fails:

https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=6&ved=2ahUKEwj4ycfsytnjAhU9WhUIHX10D7EQFjAFegQIAhAC&url=https%3A%2F%2Fosf.io%2Ffqgu4%2Fdownload&usg=AOvVaw1wMPdKTp7Z4JckyZPlCVKj

That's way better than nothing.

On the questions. 

1. No (Can people really do that?!) 1

2. No 1

3 No 2

4. No 1

5 Yes 4

6 ? 3 . Sometimes I'll sit to pee and then notice the need to defecate.

7 Yes 5

8 Yes 5

9 Yes 4 (Just before I do)

10 ?(Not sure on that one)

11 Yes 5

12 Yes 5

13 No 2 (Unexpected farts do occur)

14 ? 3

15 No 2( Tired muscles? Wouldn't have a clue)

16 No  1

17 Yes 5

18 No 2

19 ? 3

20  ? 3

21 No 2