I am new to this whole thing and have been very ill so please be patient with me.

I was just aproved for SSDI. I filed in January and I received it this week. My question is is I tried to go back to work for a total of 13 hours in June with gross pay at $421.00.I failed miserably and my DR was anoyed. I was approved after I worked and I receive my first benefits for LTD and SSDI in August. I called and tried to report it but they said wait till you get your pay stub. My question is are they going to deny me now and look at this as work? Should I report it? I hope I didnt screw myself. Anyone else have this issue. I was just trying to work again, but I am/was in denial.
thanks